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U2的《Bad (Live)》 歌词

2023-08-17 14:07:56
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歌曲名:Bad (Live)
歌手:U2
专辑:Live From Paris

If you twist and turn away
If you tear yourself in two again
If I could, yes I would
If I could, I would
Let it go
Surrender
Dislocate
If I could throw this
Lifeless lifeline to the wind
Leave this heart of clay
See you walk, walk away
Into the night
And through the rain
Into the half-light
And through the flame
If I could through myself
Set your spirit free
I"d lead your heart away
See you break, break away
Into the light
And to the day
To let it go
And so to fade away
To let it go
And so fade away
I"m wide awake
I"m wide awake
Wide awake
I"m not sleeping
Oh, no, no, no
If you should ask then maybe they"d
Tell you what I would say
True colors fly in blue and black
Bruised silken sky and burning flag
Colors crash, collide in blood shot eyes
If I could, you know I would
If I could, I would
Let it go...
This desperation
Dislocation
Separation
Condemnation
Revelation
In temptation
Isolation
Desolation
Let it go
And so fade away
To let it go
And so fade away
To let it go
And so to fade away
I"m wide awake
I"m wide awake
Wide awake
I"m not sleeping
Oh, no, no, no
By 风轮

http://music.b***.com/song/539039

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2023-08-10 09:37:531

过了波峰的单面板有锡珠如何处理

无铅焊接考虑到环境和健康的因素,欧盟已通过立法将在2008年停止使用含铅钎料,美国和日本也正积极考虑通过立法来减少和禁止铅等有害元素的使用。 铅的毒害目前全球电子行业用钎料每年消耗的铅约为20000t,大约占世界铅年总产量的5%。铅和铅的化合物已被环境保护机构(EPA)列入前17种对人体和环境危害最大的化学物质之一。 无铅钎料 目前常用的含铅合金焊料粉末有锡一铅(Sn-Pb)、锡一铅一银(Sn-Pb-Ag)、锡一铅一铋(Sn-Pb-Bi)等,常用的合金成分为63%Sn/37%Pb以及62%Sn/36%Pb/2%Ag。不同合金比例有不同的熔化温度。对于标准的Sn63和Sn62焊料合金来说,回流温度曲线的峰值温度在203到230度之间。然而,大部分的无铅焊膏的熔点比Sn63合金高出30至45度,因此, 无铅钎料的基本要求目前国际上公认的无铅钎料定义是:以Sn为基体,添加了Ag、Cu、Sb、In其它合金元素,而Pb的质量分数在0.2%以下的主要用于电子组装的软钎料合金。无铅钎料不是新技术,但今天的无铅钎料研究是要寻求年使用量为5~6万吨的Sn-Pb钎料的替代产品。因此,替代合金应该满足以下要求: (1)其全球储量足够满足市场需求。某些元素,如铟和铋,储量较小,因此只能作为无铅钎料中的微量添加成分; (2)无毒性。某些在考虑范围内的替代元素,如镉、碲是有毒的。而某些元素,如锑,如果改变毒性标准的话,也可以认为是有毒的; (3)能被加工成需要的所有形式,包括用于手工焊和修补的焊丝;用于钎料膏的焊料粉;用于波峰焊的焊料棒等。不是所有的合金能够被加工成所有形式,如铋的含量增加将导致合金变脆而不能拉拔成丝状; (4)相变温度(固/液相线温度)与Sn-Pb钎料相近; (5)合适的物理性能,特别是电导率、热导率、热膨胀系数; (6)与现有元件基板/引线及PCB材料在金属学性能上兼容; (7)足够的力学性能:剪切强度、蠕变抗力、等温疲劳抗力、热机疲劳抗力、金属学组织的稳定性; (8)良好的润湿性; (9)可接受的成本价格。 新型无铅钎料的成本应低于 22.2/kg,因此其中In的质量分数应小于1.5%,Bi含量应小于2.0%。 早期的研发计划集中于确定新型合金成分、多元相图研究和润湿性、强度等基本性能考察。后期的研发计划主要集中于五种合金系列:SnCu、SnAg、SnAgCu、SnAgCuSb和SnAgBi。并深入探讨其疲劳性能、生产行为和工艺优化。 表2.3 NCMS美国国家制造科学中心提出的无铅钎料性能评价标准 IPC也于2000年6月发布了研究报告“A guide line for assembly of lead-free electronics”。 目前国际上关于无铅钎料的主要结论如下:现在已经有很多种无铅钎料面世没有一种能够为SnPb钎料的直接替代提供全面的解决方案。 (1)对于某些特殊的工艺过程,某些特定的无铅钎料可以实现直接替代; (2)目前而言,最吸引人的无铅钎料是Sn-Ag-Cu系列。其他有潜力的组合包括Sn-0.7Cu、Sn-3.5Ag和Sn-Ag-Bi; (3)目前还没有合适的高铅高熔点钎料的无铅替代品; (4)目前看来,钎剂的化学系统不需要进行大的变动; (5)无铅钎料形成焊点的可靠性优于SnPb合金。 几种无铅钎料的对比 (1)SnCu:价格最便宜;熔点最高;力学性能最差。 (2)SnAg:力学性能良好,可焊性良好,热疲劳可靠性良好,共晶成分时熔点为221℃。SnAg和SnAgCu组合之间的差异很小,其选择主要取决于价格、供货等其他因素。 (3)SnAgCu(Sb):直到最近几年才知道Sn-Ag-Cu之间存在三元共晶,且其熔点低于Sn-Ag共晶,当然该三元共晶的准确成分还存在争议。与Sn-Ag和Sn-Cu相比,该组合的可靠性和可焊性更好。而且加入0.5%Sb后还可以进一步提高其高温可靠性。 (4)SnAgBi(Cu)(Ge):熔点较低,200~210℃;可靠性良好;在所有无铅钎料中可焊性最好,已得到Matsushita确认;加入Cu或Ge可进一步提高强度;缺点是含Bi带来润湿角上升缺陷的问题。 (5)SnZnBi:熔点最接近于Sn-Pb共晶;但含Zn带来很多问题,如钎料膏保存期限、大量活性钎剂残渣、氧化问题、潜在腐蚀性问题。目前不推荐使用。 2.2 选择合金 由上,本次回流工艺设计焊料合金采用Sn/Ag/Cu合金(Sn/Ag3.0/Cu0.5),因为该合金被认为是国际工业中的首选并且得到了工业和研究公会成员的推荐。因为虽然一些公会还提议并且研究了另一种合金Sn/0.7Cu(质量百分比),一些企业在生产中也有采用这种合金。但是相对Sn/Cu合金的可靠性和可湿性,另外考虑到在回流焊和波峰焊中采用同种合金,Sn/Ag/Cu合金便成为工艺发展试验最好的选择。 Sn/Ag3.0/Cu0.5合金性能: 溶解温度:固相线217℃/液相线220℃;成本:0.10美元/cm3 与Sn/Cu焊料价格比:2.7 机械强度:48kg/mm2 延伸率:75% 湿润性:良 由Sn/Ag/Cu合金性能可知:焊料合金熔融温度比原Sn/Pb合金高出36℃,形成商品化后的价格也比原来提高。工艺焊接温度采用日本对此合金焊料的推荐工艺曲线,见图2.1。 日本推荐的无铅回流焊典型工艺曲线 说明:推荐的工艺曲线上有三个重要点: (1) 预热区升温速度要尽量慢一些(选择数值2~3℃/s),以便控制由焊膏的塌边而造成焊点的桥接、焊锡球等。 (2) 预热要求必须在(45~90sec、120~160℃)范围内,以控制由PCB基板的温差及焊剂性能变化等因素而发生回流焊时的不良。 (3) 焊接的最高温度在230℃以上,保持20~30sec,以保证焊接的湿润性。 冷却速度选择-4℃/s 6 回流焊中出现的缺陷及其解决方案 焊接缺陷可以分为主要缺陷、次要缺陷和表面缺陷。凡使SMA功能失效的缺陷称为主要缺陷;次要缺陷是指焊点之间润湿尚好,不会引起SMA功能丧失,但有影响产品寿命的可能的缺陷;表面缺陷是指不影响产品的功能和寿命。它受许多参数的影响,如焊膏、基板、元器件可焊性、印刷、贴装精度以及焊接工艺等。我们在进行SMT工艺研究和生产中,深知合理的表面组装工艺技术在控制和提高SMT生产质量中起着至关重要的作用。 回流焊中的锡珠 (1) 回流焊中锡珠形成的机理 回流焊中出现的锡珠(或称焊料球),常常藏于矩形片式元件两焊端之间的侧面或细间距引脚之间,如图6.1、6.2。在元件贴装过程中,焊膏被置于片式元件的引脚与焊盘之间,随着印制板穿过回流焊炉,焊膏熔化变成液体,如果与焊盘和器件引脚等润湿不良,液态焊料会因收缩而使焊缝填充不充分,所有焊料颗粒不能聚合成一个焊点。部分液态焊料会从焊缝流出,形成锡珠。因此,焊料与焊盘和器件引脚的润湿性差是导致锡珠形成的根本原因。 图6.1 片式元件一例有粒度稍大的锡球 图6.2 比引脚四周有分散的锡球 锡膏在印刷工艺中,由于模板与焊盘对中偏移,若偏移过大则会导致锅膏漫流到焊盘外,加热后容易出现锡珠。贴片过程中Z轴的压力是引起锡珠的一项重要原因,往往不被人们历注意,部分贴片机由于Z铀头是依据元件的厚度来定位.故会引起元件贴到PCB上一瞬间将锡蕾挤压到焊盘外的现象,这部分组喜明显会引起锡珠。这种情况下产生的锡珠尺寸稍大,通常只要重新调节Z铀高度,就能防止锡珠的产生。 (2) 原因分析与控制方法 造成焊料润湿性差的原因很多,以下主要分析与相关工艺有关的原因及解决措施: (1) 回流温度曲线设置不当。焊膏的回流与温度和时间有关,如果未到达足够的温度或时间,焊膏就不会回流。预热区温度上升速度过快,时间过短,使焊膏内部的水分和溶剂未完全挥发出来,到达回流焊温区时,引起水分、溶剂沸腾,溅出锡珠。实践证明,将预热区温度的上升速度控制在1~4℃/s是较理想的。 (2) 如果总在同一位置上出现锡珠,就有必要检查金属模板设计结构。模板开口尺寸腐蚀精度达不到要求,焊盘尺寸偏大,以及表面材质较软(如铜模板),会造成印刷焊膏的外形轮廓不清晰,互相桥接,这种情况多出现在对细间距器件的焊盘印刷时,回流焊后必然造成引脚间大量锡珠的产生。因此,应针对焊盘图形的不同形状和中心距,选择适宜的模板材料及模板制作工艺来保证焊膏印刷质量。 (3) 如果从贴片至回流焊的时间过长,则因焊膏中焊料粒子的氧化,焊剂变质、活性降低,会导致焊膏不回流,产生锡珠。选用工作寿命长一些的焊膏(我们认为至少4h),则会减轻这种影响。 (4) 另外,焊膏错印的印制板清洗不充分,会使焊膏残留于印制板表面及通孔中。回流焊之前,贴放元器件时,使印刷焊膏变形。这些也是造成锡珠的原因。因此应加强操作者和工艺人员在生产过程中的责任心,严格遵照工艺要求和操作规程进行生产,加强工艺过程的质量控制。 6.2 立片问题(曼哈顿现象) 形片式元件的一端焊接在焊盘上,而另一端则翘立,这种现象就称为曼哈顿现象,见图6.5。引起这种现象的主要原因是元件两端受热不均匀,焊膏熔化有先后所致。在以下情况会造成元件两端受热不均匀: 图6.5 立片现象 图6.6 元件偏离焊盘故两侧受力不平衡产生立片现象 。 (1)元件排列方向设计不正确。我们设想在回流焊炉中有一条横跨炉子宽度的回流焊限线,一旦焊膏通过它就会立即熔化,如图6.7所示。片式矩形元件的一个端头先通过回流焊限线,焊膏先熔化,完全浸润元件端头的金属表面,具有液态表面张力;而另一端未达到183℃液相温度,焊膏未熔化,只有焊剂的粘接力,该力远小于回流焊焊膏的表面张力,因而,使未熔化端的元件端头向上直立。因此,应保持元件两端同时进入回流焊限线,使两端焊盘上的焊膏同时熔化,形成均衡的液态表面张力,保持元件位置不变。 图6.7 焊盘一侧锡青末熔化.两焊盘张力不平衡就会出现立碑。 (2)在进行汽相焊接时印制电路组件预热不充分。汽相焊是利用惰性液体蒸汽冷凝在元件引脚和PCB焊盘上时,释放出热量而熔化焊膏。汽相焊分平衡区和饱和蒸汽区,在饱和蒸汽区焊接温度高达217℃,在生产过程中我们发现,如果被焊组件预热不充分,经受100℃以上的温差变化,汽相焊的汽化力很容易将小于1206封装尺寸的片式元件浮起,从而产生立片现象。我们通过将被焊组件在高低温箱内145~150℃的温度下预热1~2min,然后在汽相焊的平衡区内再预热1min左右,最后缓慢进入饱和蒸汽区焊接,消除了立片现象。 (3)焊盘设计质量的影响。若片式元件的一对焊盘尺寸不同或不对称,也会引起印刷的焊膏量不一致,小焊盘对温度响应快,其上的焊膏易熔化,大焊盘则相反,所以,当小焊盘上的焊膏熔化后,在焊膏表面张力作用下,将元件拉直竖起。焊盘的宽度或间隙过大,也都可能出现立片现象。严格按标准规范进行焊盘设计是解决该缺陷的先决条件。 6.3 桥接 桥接也是SMT生产中常见的缺陷之一,它会引起元件之间的短路,遇到桥接必须返修。桥接这发生的过程。 (1)焊膏质量问题 锡膏中金属含量偏高,特别是印刷时间过久后.易出现金属含量增高;焊膏黏度低,预热后漫流到焊盘外;焊膏塌落度差,预热后汉漫到焊盘外,均会导致IC引脚桥接。 解决办法是调整锡膏。 (2)印刷系统 印刷机重复精度差,对位不齐,锡膏印刷到银条外,这种情况多见于细间距QFP生产;钢板对位不好和PCB对位不好以及钢板窗口尺寸/厚度设计不对与PCB焊盘设计合金镀层不均匀,导致的锡膏量偏多,均会造成桥接。 解决方法是调整印刷机,改善PCB焊盘涂覆层。 (3)贴放 贴放压力过大,锡膏受压后浸沉是生产中多见的原因,应调整Z轴高度。若有贴片精度不够,元件出现移位及IC引脚变形,则应针对原因改进。 (4)预热 升温速度过快,锡膏中溶剂来不及挥发。 6.4 吸料/芯吸现象 芯吸现象又称抽芯现象是常见焊接缺陷之一如图6.8,多见于汽相回流焊中。芯吸现象是焊料脱离焊盘沿引脚上行到引脚与芯片本体之间,会形成严重的虚焊现象。 图6.8 芯吸现象 产生的原因通常认为是元件引脚的导热率大.升温迅速,以致焊料优先润湿引脚,焊料与引脚之间的润湿力远大于焊料与焊盘之间的润湿力,引脚的上翘更会加剧芯吸现象的发生。在红外回流焊中,PCB基材与焊料中的有机助焊剂是红外线的优良吸收介质,而引脚却能部分反射红外线,相比而言,焊料优先熔化,它与焊盘的润湿力大于它与引脚之间的润湿力,故焊料不会沿引脚上升,发生芯吸现象的概率就小很多。 解决办法是:在汽相回流焊时应首先将SMA充分预热后再放入汽相炉中;应认真检查和保证PCB板焊盘的可焊性,可焊性不好的PCB不应用于生产;元件的共面性不可忽视,对共面性不良的器件不应用于生产。 6.5 焊接后印制板阻焊膜起泡 印制板组件在焊接后,会在个别焊点周围出现浅绿色的小泡,严重时还会出现指甲盖大小的泡状物,不仅影响外观质量,严重时还会影响性能,是焊接工艺中经常出现的问题之一。 阻焊膜起泡的根本原因,在于阻焊膜与阳基材之间存在气体/水蒸气。微量的气体/水蒸气会夹带到不同的工艺过程,当遇到高温时,气体膨胀,导致阻焊膜与阳基材的分层。焊接,焊盘温度相对较高,故气泡首先出现在焊盘周围。 现在加工过程经常需要清洗,干燥后再做下道工序,如腐刻后,应干燥后再贴阻焊膜,此时若干燥温度不够,就会夹带水汽进入下道工序。PCB加工前存放环境不好,湿度过高,焊接时又没有及时干燥处理;在波峰焊工艺中,经常使用含水的助焊剂,若PCB预热温度不够,助焊剂中的水汽会沿通孔的孔壁进入到PCB基板的内部,焊盘周围首先进入水汽,遇到焊接高温后这些情况都会产生气泡。 解决办法是; (1)应严格控制各个环节,购进的PCB应检验后入库.通常标准情况下,不应出现起泡现象; (2)PCB应存放在通风干燥环境下,存放期不超过6个月; (3)PCB在焊接前应放在烘箱中预烘105℃/4h~6h; 6.6 PCB扭曲 PCB扭曲问题是SMT大生产中经常出现的问题,它会对装配及测试带来相当大的影响,因此在生产中应尽量避免这个问题的出现,PCB扭曲的原因有如下几种: (1) PCB本身原材料选用不当,PCB的Tg低,特别是纸基PCB,其加工温度过高,会使PCB变弯曲。 (2) PCB设计不合理,元件分布不均会造成PCB热应力过大,外形较大的连接器和插座也会影响PCB的膨胀和收缩,乃至出现永久性的扭曲。 (3)双面PCB,若一面的铜箔保留过大(如地线),而另一面铜箔过少,会造成两面收缩不均匀而出现变形。 (4)回流焊中温度过高也会造成PCB的扭曲。 针对上述原因,其解决办法如下:在价格和空间容许的情况下,选用Tg高的PCB或增加PCB的厚度,以取得最佳长宽比;合理设计PCB,双面的钢箔面积应均衡,在没有电路的地方布满钢层,并以网络形式出现,以增加PCB的刚度,在贴片前对PCB进行预热,其条件是105℃/4h;调整夹具或夹持距离,保证PCB受热膨胀的空间;焊接工艺温度尽可能调低;已经出现轻度扭曲时,可以放在定位夹具中,升温复位,以释放应力,一般会取得满意的效果。 6.7 IC引脚焊接后引脚开路/虚焊 IC引脚焊接后出现部分引脚虚焊,是常见的焊接缺陷,产生的原因很多,主要原因,一是共面性差,特别是QFP器件.由于保管不当,造成引脚变形,有时不易被发现(部分贴片机没有检查共面性的功能),产生的过程如图6.9所示。 图6.9 共面性差的元件焊接后出现需焊 因此应注意器件的保管,不要随便拿取元件或打开包装。二是引脚可焊性不好。IC存放时间长,引脚发黄,可焊性不好也会引起虚焊,生产中应检查元器件的可焊性,特别注意比存放期不应过长(制造日期起一年内),保管时应不受高温、高湿,不随便打开包装袋。三是锡膏质量差,金属含量低,可焊性差,通常用于QFP器件的焊接用锡膏,金属含量应不低于90%。四是预热温度过高,易引起IC引脚氧化,使可焊性变差。五是模板窗口尺寸小,以致锡膏量不够。通常在模板制造后,应仔细检查模板窗口尺寸,不应太大也不应太小,并且注意与PCB焊盘尺寸相配套。 6.8片式元器件开裂 在SMC生产中,片式元件的开裂常见于多层片式电容器(MLCC),其原因主要是效应力与机械应力所致。 (1)对于MLCC类电容来讲,其结构上存在着很大的脆弱性,通常MLCC是由多层陶瓷电容叠加而成,强度低,极不耐受热与机械力的冲击。 (2)贴片过程中,贴片机z轴的吸放高度,特别是一些不具备z轴软着陆功能的贴片机,吸放高度由片式元件的厚度而不是由压力传感器来决定,故元件厚度的公差会造成开裂。 (3)PCB的曲翘应力,特别是焊接后,曲翘应力容易造成元件的开裂。 (4)一些拼板的PCB在分割时,会损坏元件。 预防办法是:认真调节焊接工艺曲线,特别是预热区温度不能过低;贴片时应认真调节贴片机z轴的吸放高度;应注意拼板的刮刀形状;PCB的曲翘度.特别是焊接后的曲翘度,应有针对性的校正,如是PCB板材质量问题,需另重点考虑。 6.9其他常见焊接缺陷 (1)差的润湿性 差的润湿性,表现在PCB焊盘吃锡不好或元件引脚吃锡不好。 产生的原因:元件引脚PCB焊盘已氧化/污染;过高的回流焊温度;锡膏的质量差。均会导致润湿性差,严重时会出现虚焊。 (2)锡量很少 锡量很少,表现在焊点不饱满,IC引脚根弯月面小。 产生原因:印刷模板窗口小;灯芯现象(温度曲线差);锡膏金属含量低。这些均会导致锡量小,焊点强度不够。 (3)引脚受损 引脚受损,表现在器件引脚共面性不好或弯曲,直接影响焊接质量。 产生原因:运输/取放时碰坏。为此应小心地保管元器件,特别是FQFP。 (4)污染物覆盖了焊盘 污染物覆盖了焊盘,生产中时有发生。 产生原因:来自现场的纸片;来自卷带的异物;人手触摸PCB焊盘或元器件;字符图位置不对。因而生产时应注意生产现场的清洁,工艺应规范。 (5)锡膏量不足 锡膏量不足,生产中经常发生的现象。 产生原因:第一块PCB印刷/机器停止后的印刷;印刷工艺参数改变;钢板窗口堵塞;锡膏品质变坏。上述原因之一,均会引起锡音量不足,应针对性解决问题。 (6)锡膏呈角状 锡膏呈角状,生产中经常发生,且不易发现、严重时会连焊。 产生原因:印刷机的抬网速度过快;模板孔壁不光滑,易使锡膏呈元宝状。 7 总结 目前国内外已经对无铅焊接技术进行了大量的研究,对提出的多种无铅焊料包括Sn-Cu系列、Sn-Ag-Cu系列、Sn-Ag-Bi-Cu系列、Sn-Bi系列、Sn-Sb系列等都有较为深入的研究。国际工业研究会等电子行业协会对典型的合金材料例如Sn-Ag-Cu系列的几种合金比例也有推荐的工艺参数;一些有实力的企业更是在此研究成果的基础上进行反复试验研究对工艺参数不断优化,尽可能取得最大程度上的效益。本课题参照国内外文献资料和有关期刊,选择适当参数;并选定SMT相关网站中登出市场上符合工艺要求的回流焊设备组成无铅回流焊的工艺过程。最后对焊接过程中可能出现的焊接缺陷作出理论分析,并提出相对的解决方案。 本课题是工艺的理论研究,由于设备欠缺、更因为本人SMT方面知识的浅薄不全面,出现谬误在所难免。望各位批评指正,不胜感激。
2023-08-10 09:38:011

配置2000左右的电脑用于平面设计制网页

找个卖电脑给你配吧.
2023-08-10 09:38:116

放飞你的生活、享受生活,怎么用英文翻译?最贴近生活,一定要对啊,放店招牌的

release your life, and enjoy it。我认为inspir在这和你的意思不相近。
2023-08-10 09:38:3910

请教电阻不良原因

你要把万用表的调到测电阻那个档,最好是正反极的调试把
2023-08-10 09:39:102

Pb-Free中PB是什么含义呢?

Pb是化学元素铅的符号pb-free是不含铅的意思
2023-08-10 09:39:192

保护动物的英语名句三篇

保护动物的英语名句篇一   1、保护野生动物,维护生态安全!   Protect wild animals and maintain ecological security!   2、关爱动物,关爱我们共同的世界。   Love animals, love our common world.   3、动物也是有生命的,请保护动物!   Animals also have life, please protect animals!   4、没有动物,生命没有了动力。   Without animals, life has no power.   5、不鼓励买动物放生,善心可能导致恶果。   Don"t encourage buy animal free, good may lead to consequences.   6、提高环境意识,爱护花草树木,保护野生动物,维护公共设施,促进人与人、人与社会、人与自然的协调发展。   Improve the environmental awareness, take care of flowers and trees, protect wild animals, protect public facilities, promote the harmonious development of man and man, man and society, man and nature.   7、对动物的保护,就是不干扰它们的自由生活。   The best protection for animals is not to interfere with their free life.   8、动物是人类的朋友请保护动物。   Animals are friends of human beings.   9、保护动物,你我的职责。   Protect animals, you and I.   10、动物是人类的第二,请大家来保护它们。   Animals are second of the human race. Please protect them.   11、如果爱鸟,请去观鸟,不要关鸟。   If you love birds, please don"t close the bird to bird watching.   12、不穿野兽皮毛服装,每张皮的背后都有一桩谋杀案。   There"s a murder behind every skin, not in a wild animal or fur coat.   13、你喜欢它,请你爱护它,你不喜欢它,请你要更加爱护它,它是我们的家园守护者!   Do you like it, please take care of it, you do not like it, please take care of it, it is the guardian of our home!   14、保护野生动物是人类更好的选择!   Protecting wild animals is a better choice for human beings!   15、保护环境,功在当代利在千秋。   Protect the environment, gongzaidangdai cabinet.   16、美丽来自于生命当生命枯竭还将会有美丽存在?   Beauty comes from life. When life is dry, there will be beauty   17、保护珍稀动物,关注地球生态。   Protect rare animals, pay attention to the ecology of the earth.   18、保护野生动物,不打鸟,不捉蛇,不捉青蛙。   Protect wild animals, do not fight birds, do not catch snakes, do not catch frogs.   19、请和动物,做好朋友。   Please be good friends with animals.   20、不要购买野生动物制品,否则,你就是间接**者。   Don"t buy wildlife products, or you"re an indirect slaughter. 保护动物的英语名句篇二   1、愿动物的爱永远伴随着你成长。   May the love of animals grow with you forever.   2、保护野生动物,是人类更好的选择!   Protecting wildlife is a better choice for mankind!   3、对所利用动物应怀感恩之意,对所饲养动物应怀体怜之情。   We should be grateful to the animals used and sympathetic to the animals raised.   4、保护动物吧。不然世界上的最后一种动物是人类。   Protect animals. Otherwise, the last animal in the world is human.   5、动物和咱是一家,保护动物靠大家。   Animals and we are one family. We depend on everyone to protect animals.   6、一边看着小羊的无辜眼神,一边嚼着它母亲的尸体,你和魔鬼有什么区别?   What"s the difference between you and the devil when you look at the innocent eyes of the lamb and chew on its mother"s body?   7、是先有鸟还是先有蛋,你不知道,我不知道,只有鸟知道。   You don"t know whether there are birds or eggs first. I don"t know. Only birds know.   8、地球上没有动物,那是一个没有活力的世界。   There are no animals on the earth. It is a world without vitality.   9、假如动物穿上你的皮!   If animals wear your skin!   10、保护野生动物就是保护人类自己!   Protecting wildlife means protecting human beings themselves!   11、保护鸟类保护野生动物维护生态平衡。   Protect birds, protect wildlife and maintain ecological balance.   12、关注候鸟保护环境。   Pay attention to the protection of environment by migratory birds.   13、保护动物就是,保护我们的同类。   Protecting animals means protecting our own kind.   14、同一个蓝天下,和谐相处,保护动物,人人有责。   It is everyone"s duty to live in harmony and protect animals under the same blue sky.   15、给它们一点爱,我们的家园地球才更美好。   Give them a little love, our only home, the earth will be better.   16、动物是我们的朋友,请大家尊重朋友,珍惜这份友谊,谢谢!   Animals are our friends. Please respect and cherish this friendship. Thank you.   17、保护动物,人人有责。请维持生态平衡。   It is everyone"s duty to protect animals. Please maintain the ecological balance.   18、不要让一切都成为记忆。   Don"t let everything be a memory.   19、爱护动物,就是爱护你自己。   To love animals is to love yourself.   20、若不具备条件,切勿饲养动物。   Do not raise animals unless you have the necessary conditions. 保护动物的英语名句篇三   1、关注候鸟保护环境。   Concerned about migratory birds to protect the environment.   2、善待动物,和谐生存!   Treat animals well, live in harmony!   3、关注候鸟,保护环境。   Attention to migratory birds, environmental protection.   4、保护野生动物是人类更好的选择!   Protecting wild animals is a better choice for human beings!   5、关爱生命,停止杀戮,我们拥有一个共同的地球。   Love life, stop killing, we have a common earth.   6、保护鸟类,保护野生动物,维护生态平衡。   Protect birds, protect wild animals, maintain ecological balance.   7、保护动物维护生态平衡。   Protection of animals to maintain ecological balance.   8、假如动物,穿上你的皮!   If an animal, put on your skin!   9、地球上没有动物,那是一个没有活力的世界。   There are no animals on the earth, it is a world without vitality.   10、愿动物的爱永远伴随着你成长。   May the love of animals grow with you forever.   11、爱护动物,就是爱护我们自己。   To love animals is to love ourselves.   12、爱鸟护鸟是人类的美德。   The bird is a virtue of mankind.   13、动物是人类的朋友,请保护动物。   Animals are friends of human beings.   14、鸟是害虫的天敌,鸟是人类的朋友。   Birds are the natural enemies of insects and birds are our friends.   15、同一片天空,同一个家园。   One sky, one home.   16、是鸟先消失还是蛋先消失,你知道,我知道,只有鸟不知道。   Is it a bird that goes away or an egg disappears, you know, I know, only birds don"t know.   17、希望的眼眸,不只你拥有。   I hope you have not eyes.   18、保护动物,维护生态平衡。   Protect animals and maintain ecological balance.   19、请爱护人类最亲密的朋友。   Please take care of the closest friends of human beings.   20、同在地球上,共享大自然!   Along with the earth, sharing nature!   
2023-08-10 09:39:261

《芭比之真假公主》里的《Free》歌词谁有?

这个是下载的http://bt.acnow.net/ShowBT/38650.htm、图片http://www.23tg.com/xinwen/20050311/23tg_42837.htm(歌曲也有)这个是下载地址和是听的包括歌词下载地址:http://www.megancavallari.com/mp3/animsongs/girl_like_you.mp3试听页面:http://www.megancavallari.com/mp3/animsongs/girl_like_you.html《Barbie as The Princess and the Pauper 》专辑歌词:http://www.aquamarine.nu/lyrics/af/barbieastheprincessandthepauper.htmlI Am A Girl Like YouERIKA:If I"d like to have my breakfast hotMadame Carp will make me payAnd I have to fetch the eggs myselfAnd the barn"s a mile awayIt"s cold and wet and still I getAn omlette on my plateBut in my head I"m back in bedSnuggled up and sleeping latePRINCESS ANNELIESE:If I want some eggs I ring the bellAnd the maid comes running inAnd she serves them on a silver trayAnd she brings a cookie tinAnd while I eat, she rubs my feetAnd strolling minstrels playBut I"d rather be in my library reading science books all dayERIKA:I"m just like youPRINCESS ANNELIESE:You are?ERIKA:You"re just like meThere"s somewhere else we"d rather beSomewhere that"s oursSomewhere that dreams come trueYes, I am a girl like youYou"d never think that it was soBut now I"ve met you and I knowIt"s plain as day, sure as the sky is blueThat I am a girl like youFirst I choose a fabric from the rackAnd I pin the pattern downAnd I stitch it in the front and backAnd it turns into a gownPRINCESS ANNELIESE:I wear the gown, without my crownAnd dance around my roomBOTH:And imagine life without the strife of an unfamiliar groomPRINCESS ANNELIESE & (ERIKA):I"m just like you (I think that"s true)You"re just like me (Yes, I can see)BOTH:We take responsibilityPRINCESS ANNELIESE & (ERIKA):We carry through (We carry through)BOTH:Do what we need to doYes, I am a girl like youERIKA & (PRINCESS ANNELIESE):I"m just like you (I"m just like you)You"re just like me (You"re just like me)BOTH:It"s something anyone can seeERIKA & (PRINCESS ANNELIESE):A heart that beats (A heart that beats)BOTH:A voice that speaks the truthYes, I am a girl like you!这个是资料最新音乐娱乐资讯 爱唱歌的芭比来啦! 她们就是真假公主芭比。近日,深受人们喜爱的芭比在她最新上映的第一部音乐电影剧《芭比之真假公主》里,一人分饰两位主角——城堡内金发的安妮丝公主Anneliese和棕发的贫穷村女爱莉嘉Erika,两个截然不同的身份,却有着相同善良纯真的心,追寻真爱和梦想,最后,两位真假公主成为了好朋友,揭穿了坏人的阴谋。这是芭比从影以来最具挑战性的角色,利用计算机影像的魔幻技术,全世界喜爱芭比的人们不仅可以亲眼目睹芭比栩栩如生地现身银幕,还可欣赏到她们悦耳的歌声,这是芭比系列的一次崭新尝试。泰盛文化即将推出《真假公主芭比》正版VCD,与芭比一起在梦幻般的童话时空寻找真爱。《真假公主芭比》故事改编自幽默文学大师马克·吐温的经典作品《王子与乞丐》,并由百老汇著名作曲家领衔创作剧中的精彩音乐,芭比用她优美动人的歌声,安娜妮丝唱着《希望之歌》,爱莉嘉唱着《爱的故事》,让你体验其中音乐之美,梦幻之美。泰盛文化推出的《真假公主芭比》正版VCD建议零售价26元,采用中英双语对白,中文字幕,同时保留了所有歌曲的英文原声,带您轻松走进芭比公主的如幻如真的童话世界。据介绍,Mattel公司出品的这款会唱歌的芭比娃娃推出短短2个月在中国大陆就卖出了50000多个。美,是女人一生的事业,芭比的出现,将女人关于美的理想,从3岁一直延续到80岁,有梦想的地方就有芭比,快来跟真假公主芭比一起约会吧。ANNELIESE:All my life I"ve always wanted Tohave one day just for me Nothing to do and for once nowhere I need to beWith no lessons,lords, or lunches Or to-do list in the wayNo one to say when to eat or read or leave or stayThat would be the dayERIKA:All my life I"ve always wanted Tohave one day for myselfNot waking up with a pile of work on every shelfWith no hems in need of pressingAnd no sleeves in disarrayNo wedding gown with a thousand stitches to crochetAnd no debt to payWhat would it be like to bePRINCESS ANNELIESE:What would it be like to beERIKA:FreePRINCESS ANNELIESE:Free Free to try crazy thingsERIKA:Free from endless IOU"sANNELIESE:Free to flyERIKA:Free to singANNELIESE:And marry whom I chooseANNELIESE:You would think that I"m so lucky That I have so many thingsI"m realizing that every present comes with stringsERIKA:Though I know I have so littleMy determination"s strongPeople will gather around the world to hear my songWOMAN:Can I come along?ANNELIESE:Now I fear I"ll never beERIKA:Soon I will forever beBOTH:FreeI close my eyes and feel myself fly a thousand miles awayI could take flight but would it be right My conscience tells me stayANNELIESE:I"ll remain forever royalERIKA:I"ll repay my parent"s debtBOTH: Duty means doing the things your heart may well regretANNELIESE:But I"ll never stop believingERIKA:She can never stop my schemes这是安娜莉斯和爱丽卡刚见面时候唱得I Am A Girl Like YouERIKA:If I"d like to have my breakfast hotMadame Carp will make me payAnd I have to fetch the eggs myselfAnd the barn"s a mile awayIt"s cold and wet and still I getAn omlette on my plateBut in my head I"m back in bedSnuggled up and sleeping latePRINCESS ANNELIESE:If I want some eggs I ring the bellAnd the maid comes running inAnd she serves them on a silver trayAnd she brings a cookie tinAnd while I eat, she rubs my feetAnd strolling minstrels playBut I"d rather be in my library reading science books all dayERIKA:I"m just like youPRINCESS ANNELIESE:You are?ERIKA:You"re just like meThere"s somewhere else we"d rather beSomewhere that"s oursSomewhere that dreams come trueYes, I am a girl like youYou"d never think that it was soBut now I"ve met you and I knowIt"s plain as day, sure as the sky is blueThat I am a girl like youFirst I choose a fabric from the rackAnd I pin the pattern downAnd I stitch it in the front and backAnd it turns into a gownPRINCESS ANNELIESE:I wear the gown, without my crownAnd dance around my roomBOTH:And imagine life without the strife of an unfamiliar groomPRINCESS ANNELIESE & (ERIKA):I"m just like you (I think that"s true)You"re just like me (Yes, I can see)BOTH:We take responsibilityPRINCESS ANNELIESE & (ERIKA):We carry through (We carry through)BOTH:Do what we need to doYes, I am a girl like youERIKA & (PRINCESS ANNELIESE):I"m just like you (I"m just like you)You"re just like me (You"re just like me)BOTH:It"s something anyone can seeERIKA & (PRINCESS ANNELIESE):A heart that beats (A heart that beats)BOTH:A voice that speaks the truthYes, I am a girl like you!这是爱丽卡和国王合唱的If You Love Me For MeERIKA:Once a lass met a ladYou"re a gentle one, said sheIn my heart I"d be gladIf you loved me for meYou say your love is trueAnd I hope that it will beDOMINIC:I"d be sure, if I knewThat you loved me for meERIKA:Could I be the one you"re seeking?Will I be the one you choose? Can you tell my heart is speaking?My eyes will give you cluesDOMINIC:What you see may be deceivingTruth lies underneath the skinERIKA:Hope will blossum by believingBOTH:The heart that lies withinDOMINIC:I"ll be yoursTogether we shall always be as oneIf you love me for meERIKA:Who can say where we"ll goWho can promise what will beBut I"ll stay by your sideDOMINIC:I"ll be yoursTogether we shall alwaysBe as oneBOTH:If you love me for meIf you love me for me这是爱丽卡卖艺和最后时候唱的Written In Your HeartAnd you"re always free to begin againAnd you"re always free to believeWhen you find the placeThat your heart belongsYou"ll never leaveYou and I will always beCelebrating life togetherI know I have found a friend forever moreLove is like a melodyOne that I will always treasureCourage is the key that opens every doorThough you may not knowWhere your gifts may leadAnd it may not show at the startWhen you live your dreamsYou"ll find destinyIs written in your heartThough you may not knowWhere your gifts may leadAnd it may not show at the startWhen you live your dreamYou"ll find destinyIs written in your heart这是教爱丽卡怎样做公主时候唱得To Be A PrincessJULIAN:To be a princessIs to know which spoon to useTo be a princessIs to own a thousand pairs of shoesTo maintain a regal gaiteLeave the parsley on your plateAnd be charming but detachedAnd yet amusedTo be a princessIs to never be confusedDo a pli?and never fallDon"t ever stray from protocolAll through the dayThere"s just one wayYou must behaveDo keep a grip and never crackStiff upper lip and arch the backBend from aboveAnd always wear your glovesAnd waveShoulders back andTummy in andPinky out andLift the chin andSlowly turn the head from side to sideERIKA:I see nowJULIAN:Breathing gentlyStepping lightlySmile brightlyNod politelyNever show a thing you feel insideGlide!To be a princessIs to always look your bestTo be a princessIs to never get to restSit for a portrait, never squirmSleep on a mattress extra firmSpeak and be cleverNever at a loss for wordsCurtsy to every count and lordLearn how to play the harpsichordSing lullabies and always harmonize in thirdsBOTH:Thirds, thirdsJULIAN:AndShe has beautiful eyesYour spirits riseWhen she walks in the roomDoors closeAnd the chemistry growsShe"s like a roseThat"s forever in bloomJULIAN & (ERIKA):Do a pli?and don"t(Ever ever ever fall)Never show dismay(And be there when people call)Be prepared whatever royal life will bringDo keep a grip and don"t(Ever ever ever crack)Take a dainty sip(Never ever turn your back)There"s a time and place and way for everythingTo be a princessIs to never make your bedTo be a princessIs to always use your head这是爱丽卡和猫洗澡的时候唱得The Cat"s MeowI can see it when you"re feeling lowYou can"t hide that from meYou"re no status quo calicoSo why keep trying to be?"Cause you"re more than thatYou"re my doggish catI wish you could see the you I seeI sayIf you barkCelebrate itMake your markSerenade itNoah"s arkShoulda had a cat like youAnd ifWhat you areIs a strange youDoesn"t meanYou should change youOnly meansYou should change your point of viewHey, felineYou fetch just fineTo thine own self be trueYour bow wow"sThe cat"s meowIt"s how I know you"re youYou don"t need the bowsOr tiaraBid your woesSayonaraTrust your nose"Cause it knows the way to goWhen youChase your tailYou"re enchantingSpirits sailWhen you"re pantingWhen you wailYou"re a rover, RomeoThere is notOne hair of youThat I would rearrangeI love you the way you areAnd that will never changeThat will never change
2023-08-10 09:39:361

线材标志LF待表什么意思?

LF标记是Lead Free的简写.英文单词Lead是指金属铅,化学符号Pb.Lead Free就是指无铅.铅是重金属。
2023-08-10 09:39:571

芯片加个rohs/leadfree有影响吗

leadfree无铅pbfree无铅是一个意思.rohs环保检测包含六项,其中一项为pb铅,含量<1000ppm为合格,所以无铅肯定是符合rohs的.
2023-08-10 09:40:051

cadmium free and lead free 翻译成中文是什么意思? 先谢谢大家了!

不含镉,铅也可以翻译成镉,铅含量为零
2023-08-10 09:40:132

SX674和SX674A区别

SX674A 波长为940nm sx674没有 sx674a的长宽高都要比sx674大总库存量(pcs)sx674为2.3k sx674a为58对比:EE-SX674 封装:Module, Connector, Slot Type,引脚:4,通道数:1,工作电压:24.0V (max),输出电压:800 mV,电源电压:24.0 V, 24.0 V (max),开关频率:1 kHz,输入电流:35 mA,供电电流:12 mA,输出电流:100 mA,开关电流:100 mA,工作温度:-25℃ ~ 55℃ (TA),安装方式:Chassis, Solder Lug,含铅标准:Lead Free,rohs:RoHS Compliant,产品生命周期:Active,工业级:Yes,工作温度:55 ℃,电源电压:5V ~ 24V,输入电流:35 mA,工作温度:-25 ℃;EE-SX674A 封装:Module, Connector, Slot Type,引脚:4,通道数:1,工作电压:24.0V (max),输出电压:800 mV,波长:940 nm,开关频率:1 kHz,电源电压:24.0 V, 24.0 V (max),输入电流:35 mA,供电电流:12 mA,输出电流:100 mA,开关电流:100 mA,工作温度:-25℃ ~ 55℃ (TA),
2023-08-10 09:40:231

高手帮忙翻译一下,急,谢谢

Electrical performance testing reportThe appearance of test:The outward appearance is good .Technological requirement :FR-4 plate ,Plate thickness 0.5mm,Spray coating tin ,Black strap ,Non-lead craft .Primary device matching :Controls IC DW01+ the MOS tube GDS8205 .Fourth,“SMT”Welding process ,The primary device surface welding is neat ,The spot is smooth ;The primary device does not have the faulty soldered joint, leaks welds, wrong pastes .Fifth:Electricity performance examination parameter test item examination normal value test actual value determination conclusion Excessively sufficient protection voltage 4.30±0.05V 4.32V PASS has put protection voltage 2.40±0.10V 2.50V PASS overflow protection electric current 2~6A 3.6A PASS the short circuit protection to restore condition separation load separation load PASS the static state from to consume the electric current < 6uA 2.7uA PASS PCB interface resistance 30< R< 65 hao European 41 hao Europe PASS DW01+ sufficient delay time 200ms, has put the delay time is 60ms
2023-08-10 09:40:313

篮球中Free Throws,Turnovers,Off.Rebounds,Def. Rebounds,Biggest Lead,Biggest Run都分别指中文的什么?

Free Throws罚球Turnovers失误Off.Rebounds进攻篮板Def. Rebounds防守篮板Biggest Lead最大领先分差Biggest Run最大连续得分Min上场时间Pts得分Ass助攻R篮板球数F犯规数
2023-08-10 09:40:411

最后一个单词是free的英文歌

On And On - ChasenAwake tonight今晚醒来I"m breathing the air of the night sky我呼吸着夜空的空气Listening and wanting听着想着An answer to questions You"re wondering你想知道一个问题的答案I never thought it ever would be possible我从没想过它会有可能To cross the lines we drew越过我们画的线That govern what we say and do那支配我们说的和做的But no height and no depth could separate us但没有什么阻碍可以分开我们Some say we need a miracle有人说我们需要一个奇迹Some say there"s no hope at all有人说根本没希望But I know that Your love is strong,但我知道你的爱是强大的it goes on and on and on and on它一直在继续Rise up when it gets us down当它知道我们失望 就会给我们力量It"ll be the voice in a blaring crowd这将是在人群中响着的声音Because we know Your love will lead us home因为我们知道你的爱 会引领我们回家It goes on and on and on and on…它一直在继续I tried my way我尝试了各种方法It always ends up being a mistake它总是最终成为一个错误But You"re right when You say当你是对的 你说That You set the time for the plans You make那是你制定的时间计划I never thought that I could ever learn to let it go我从没想过我会学会放手Somehow its better when I follow in the paths You show不知怎的它会更好 当我跟随着你的道路So I"m here I"m waiting所以我在这儿 我在等待你Cause I believe因为我相信Some say we need a miracle有人说我们需要一个奇迹Some say there"s no hope at all有人说根本没希望But I know that Your love is strong,但我知道你的爱是强大的it goes on and on and on and on它一直在继续Rise up when it gets us down当它知道我们失望 会给我们力量It"ll be the voice in a blaring crowd这将是在人群中响着的声音Because we know Your love will lead us home因为我们知道你的爱 会引领我们回家It goes on and on and on and on…它一直在继续There is no fear of belief不惧怕信仰There"s just this cold reality只有眼前这个冷酷的现实That wants to take me away from You想要带我远离你There is no doubt in my mind我心中毫无疑问That in Your perfect time在你的最佳时机Your plans and Your ways will unfold你的计划 你的方式将开展Some say we need a miracle有人说我们需要一个奇迹Some say there"s no hope at all有人说根本没希望But I know that Your love is strong,但我知道你的爱是强大的it goes on and on and on and on它一直在继续Rise up when it gets us down当它知道我们失望 会给我们力量It"ll be the voice in a blaring crowd这将是在人群中响着的声音Because we know Your love will lead us home因为我们知道你的爱 会引领我们回家It goes on and on and on and on…它一直在继续Your love is, Your love is.....你的爱是我的方向
2023-08-10 09:40:501

lead to 和cause 以及produce 的区别

---- lead to 导致; 把…带到; 领到; (道路) 通向; ----cause n. 原因; 事业; 动机; 理由; vt. 引起; 导致; 成为…的原因; 使遭受; ----- produce vt. 产生; 生产; 制作; 创作; vt. 制造; 出示; 引起; [经济学] 生利; n. 产品; 产量; 产额; 结果;
2023-08-10 09:41:163

谁能帮我翻译下面的英文

锡焊接和铜焊接 锡焊接和铜焊接原则上是相似的。就是将填充材料处在适当低的温度状态(液态状),液态焊接剂熔化开,通过扩张使其填充到即将焊接部分的小空隙间。锡焊接和铜焊接的一个主要优点就是,焊接是在一个相当低的温度下进行,所以对部件的外部形状和母件的内部结构影响都是极其微小的。锡焊接剂是相对较弱但坚固的,焊接剂有400~500MN/㎡的抗张强度。锡焊接 锡焊接剂是锡和铅的合金或是锡铅同锑,镉或铋的合金。熔点温度范围在70~300℃。锡焊接的效果不错。液态焊接剂必须湿润将要焊接物体的表面。也就是说一些合金必定会填充到焊接剂和将要焊接的金属之间。这种合金的产生可能产生固体合成物或者金属化合物。因为锡焊接剂锑与铜和铁会形成金属化合物。液态焊接仅仅湿润金属表面所以将要焊接部分的表面一定要驱尘和除油脂以做到充分清洁。清洁金属的表面很快就会形成一层薄薄的氧化层所以焊接剂很可能溶解这层氧化层。焊接剂通常是氯化锌合成物或合成树脂类。 最常用的热源焊接为电烙铁铜焊头。铜焊接 铜焊接,或铜锡焊接是在铜焊料合金的620℃ 到 900℃熔点范围内进行焊接℃。再次说明,物体焊接清洁和焊接剂是必需的。最常用的焊接剂是硼砂。硼砂合金在750℃时是除金属氧化层很有效的物质。由于铜的熔点低于碱性金属氢氟化合物得熔点,所以其被用于焊接剂使用。 通过锡焊接,使部件间有序牢固连接起来。通过铜焊接,融化的金属通过扩张得以延展焊接起来。铜焊接最常用的热源是氧气焰,气体通常是是丙烷或乙炔。通常用稳定的或者逐渐减少的火焰,当铜焊接剂刚开始氧化时火焰要适当,以降低氢脆化几率。PS:专业术语不少,我是外行,仅供参考!(自己翻译的)
2023-08-10 09:41:254

free oneself是什么意思

free oneself解脱双语对照词典结果:free oneself[英][fri: wu028cnu02c8self][美][fri wu028cnu02c8su025blf]解脱; 褪套儿; 例句:1.Heidegger"s dictum to be authentic and free oneself from conventional restraints, forexample, can lead to a rejection of morality. 譬如海德格尔的名言,做真实的自己,从传统中解放自己,就有可能引向对道德的拒绝
2023-08-10 09:41:341

lead to后面为什么省略了them?

cause常用于坏的方面lead to好坏中性均可用cause 引起某事,使某事发生cause sb/sth to do sth1. Heavy traffic is causing delays on the freeway. 重型货车造成高速堵塞。2. The fire caused $500,000 worth of damage. 这场火灾造成500,000美元的损失。3. The policy changes have caused great uncertainly for the workforce.政策变化引起了劳动力的巨大变化。4. What caused you to change your mind? 是什么让你改变主意?lead to 导致,lead sb to do sth使某人做某事1. The events that lead to start of the First World War. 2. What led him to kill his wife?3.He had led everyone to believe that his family was were wealthy.cause, lead to 直接跟名词cause sb/sth to do sth, lead sb to do 是固定用法。
2023-08-10 09:41:542

高分啊!翻译高手快来帮忙,今天 上课有一个FREE TALK。

我觉得支教好像最近很热,可以考虑一下,希望对你有所帮助。Every year, college students are inspired to help students with their study in underdeveloped areas in china. They have been trying their best to impart knowledge and offering help to those students who are so eager to learn. This volunteer practice has been beneficial in two aspects. On one hand, college volunteers are really devoted to the cause. They have opened the eyes of students in underdeveloped regions to the outside world by bringing them new knowledge and thoughts. As a result, they are extremely welcome and respected by the children there. On the other hand, college students have received a rigorous training by adapting to the harsh living conditions. They are learning how to deal with difficulties and face challenges as well. What"s more, by any means, this volunteer experience will be always a valuable asset in his or her life. In my opinion, every Chinese citizen is responsible for the development of education in china. And we college students should take the lead in response to the appeal for offering aid to children in poor areas.
2023-08-10 09:42:035

用一下英语词组编一个故事

你就自己说说自己的见闻啊
2023-08-10 09:42:201

求一篇关于名言或谚语的free talk

When I was young, I didn"t enjoy myself in studying English. While my mum asked me to do some English reading, I used to say “Tomorrow I will do it.” Then my mother said to me “Lost time never returns”. (时间一去不复返) Later I grew up, I became interest in playing computer games. I changed myself at that time, because I found the language in many interesting games is English. So I put my heart into studying English. After a period of hard working, I thought there is nothing difficult in this world for people who have a strong will. (世上无难事,只怕有心人) If we do it, the difficult thing will become easy. Now I really believe “Where there is a will, there is a way.”(有志者,事竟成)
2023-08-10 09:42:291

英语语法

to的用法: 一:表示相对,针对 be strange (common, new, familiar, peculiar, distinct, sensitive, immune, vulnerable, indispensable) to Air is indispensable to life. Aircrafts are vulnerable to interference caused by radiation. This injection will make you immune to infection. 二:表示对比,比较 1:以-ior结尾的形容词,后接介词to表示比较,如:superior ,inferior,prior,senior,junior The quarrel happened prior to my arrival. 2: 一些本身就含有比较或比拟意思的形容词,如equal,similar,equivalent,analogous A is similar to B in many ways. 3:表示一些先后顺序的形容词,如:second,subsequent,next,preliminary,preparatory Subsequent to the war,they returned to their hometown. 4: to也偶尔出现在个别动词之后,与动词形成固定词组,表示比较,如:prefer to,compare to,in contrast to compare to sth.表示比喻或比拟,而compare with sth.表示比较,如: World is usually compared to a stage Compared with his past,he has changed a lot. Prefer的正确句型是:prefer A to B或prefer doing A to doing B,但当prefer后接动词不定式时,表示比较的介 词to就要改成rather than ,如: The undaunted soldier preferred death to surrender. Many people prefer spending money to earning money. They prefer to pursue careers rather than remain home as house wives. 5: to与及个别的名词构成比较之意,如:alternative Going to an under water concert is a great alternative to going to dinner. 三: 表示修饰关系 1: 表示回复,反应意思的词,如:answer to question, solution to problem,response to inquiry,reaction to proposal,reply to letter 2: 表示建筑构件的词汇,如: entry,entrance,approach,access,passage,exit,vent,path the approach to a bridge引桥 the approach to science Half of the population was estimated to have no access to the health service. The access to education 接受教育的机会 The access to medical care 享受公费医疗的权利 3: 表示人物职位和官衔的词,如:assistant to manager, ambassador to Spain, successor to tradition, heir to throne,deputy to the National People"s Congress advisor to the Prime Minister 4: 表示权利和许可的词汇,如:right,admission The employee finally got the admission to the boardroom. Everyone has an equal right to …….. 5: 表示栅栏或障碍的词汇,如:bars to development,the barrier to progress 6: 表示与书籍,文本相关的词,如:introduction to passage. 7: 表示恭喜或是祝贺,如: The director proposed a toast to the health of the guests. Let"s drink to Dick"s success in business 8: 另外还有一些名词符合这种用法,有的具有两者息息相关,缺一不可的含义.如:key to door,invitation to party, guide to action,limitation to life,accessory to school 四: to还具有依据,伴随,和着节奏的含义,如:sing to piano, chance to the tune, stamp to the rhythm of the song, add salt to taste (一):表示相关联,相连接,如:be related to,be relative to,in relation to,be relevant to,link to Investigate all the facts related to the problem. People often linked walth to happiness. (二):表示反对和赞同。 1:to引导的表示反对,抗拒,对抗意义的词组。Be opposed to,be oppsist to,be contrary to,be adverse to,be resistant to,be contradictory to,object to,oppose to,deny tp,be aline to These buildings are resistant to earthquake. They are to tally opposed to any changes being made in the plans. 2: to引导的表示同意,赞同意义的词组:consent to,subseribe to, The employer consented to give him a salary raise. 表示调整,使符合,使适应的含义,如:adapt to,commodate to, adjust to,conform to,habituate to,fit to,suit to,correspond to,cater to She tried to habituate herself to the style of plain living. Your action should conform to the interests of the people. They offered various foods to cater to the need of customers. His words doesn"t fit to his actions. Suit your writing style to the masses. 3: 表示投降,屈服,服从的含义,如:be subject to,be subordinate to,submit to,subject to,surrender to,give in to,confess to,admit to. The minority is subordinate to the majority少数服从多数 Countries nearby oceans are always subject to earthquake. He confessed to having robbed the woman of her wallet. We"re not the kind of people to yield to any military threat. 五: 表示趋势或倾向,如:tend to,be prone to,be inclined to,be apt to,be liable to He"s liable to seasickness. You are liable to come to wrong conclusion. 六: 表示对事情的坚持与执着,如:sick to,hold o,adhere to,cling to He still holds on to his original views. 七: 表示约束,局限,如:limit to,confine to,resrict to He"s confined to the house by illness. He confined his remarks to scientific mangement. 八: 表示一种习惯或是一种适应性,如:get (be) to,used to,be accustomed to Finally,the students got used to my teaching method. 九: 表示起因和原由,如:owing to,due to,thanks to,attribute to,come down to The flight was cancelled due to the thick fog. The famous artist attributed his success to his wife. 十: 表示目的或结果,如:aim to,lead to,give rise to I aim to be an excellent college teacher. His conceit lead to his failure. These bad condition has given rise to a lot of crises 十一: 表示命运,注定,如:be doomed to,be destined to, All military adventures by the two super powers are doomed to fail. 十二: 表示数量上的积累或增加,如:in addition to,add to,amount to In addition to relief supplies,he also presented with some money. The annual output of steel amounts to 1200 tons. 十三: 表示全身心投入的含义,如:be addicted to,contribute to,devote to,commit to He is determined to devote all his life to his. 十四: 表示展望或是回顾,如:look forward to反date back to The church dates back to the 13th century. 十五: 表示方位概念.如:close to,next to I don"t like wool next to my skin. 十六: 表示依靠或借助,如:resort to,turn to,appeal to, He usually appeals to arms to settle the territory dispute. 十七: 表示有关注,关于: as to,with regard to 十八: 表示关注或重视,如:pay attention to,attach to, We should attach primary importance to job training. 十九: 表示依据或是根据,如:according to,in proportion to According to today"s newspaper,the match will be postponed. The lending countries subscribe towards capital stock in proportion to heir economic importance. 二十: 表示应该或必须含义的句式, 如: It"s time to get up. We are supposed to get here at seven. It"s up to this country to ban nuclear weapons. 常用词组 respond to(反应), appeal to(吸引), catch on to(理解), listen to (收听),used to(过去常常), give birth to,attend to(照料), see to(负责), be entitled to(有权), belong to(属于), come to(苏醒), stand up to(勇敢面对), help oneself to(请自便), refer to,to the point(切题), Train them to stand up to any severe test in hard. The ticket entitled you to a free meal in the luxury hotel. See to it that the children get a hot meal after their swim. You will catch on to the job shortly after wards. People usually refer to television for up-to-the-minute news. 介词的用法: 上午、晚要用in,at黎明、午夜、点与分。 年、月、年月、季节、周,阳光、灯、影、衣、冒in。 将来时态in...以后,小处at大处in。 有形with无形by,语言、单位、材料in。 特征、方面与方式,心情成语惯用in。 介词at和to表方向,攻击、位置、恶、善分。 日子、日期、年月日,星期加上早、午、晚, 收音、农场、值日on,关于、基础、靠、著论。 着、罢、出售、偷、公、假,故意、支付、相反,准。 特定时日和"一……就",on后常接动名词。 年、月、日加早、午、晚,of之前on代in。 步行、驴、马、玩笑on,cab,carriage则用in。 at山脚、门口、在当前,速、温、日落、价、核心。 工具、和、同随with,具有、独立、就、原因。 就……来说宾译主,对、有、方状、表细分。 海、陆、空、车、偶、被by,单数、人类know to man。 this、that、tomorrow,yesterday,next、last、one。 接年、月、季、星期、周,介词省略已习惯。 over、under正上下,above、below则不然, 若与数量词连用,混合使用亦无关。" beyond超出、无、不能,against靠着,对与反。 besides,except分内外,among之内along沿。 同类比较except,加for异类记心间。 原状because of,、 owing to、 due to表语形容词 under后接修、建中,of、from物、化分。 before、after表一点, ago、later表一段。 before能接完成时,ago过去极有限。 since以来during间,since时态多变换。 与之相比beside,除了last but one。 复不定for、找、价、原,对、给、段、去、为、作、赞。 快到、对、向towards,工、学、军、城、北、上、南。 but for否定用虚拟,复合介词待后言。 ing型由于鉴,除了除外与包合。 之后、关于、在......方面,有关介词须记全。 in内to外表位置,山、水、国界to在前。回答者: xyzbxy520 - 试用期 一级 5-24 17:33查看用户评论(8)>> 提问者对于答案的评价:谢谢啊 真的很全 太感谢了评价已经被关闭 目前有 2 个人评价 好100% (2) 不好0% (0) 相关内容u2022 初一英语语法和介词的用法 u2022 连词 和介词的用法 u2022 动词和介词的搭配用法!想的我头发都白了,大大们快... u2022 能解释一下英语中的""to""有那些用法么?特别上一在... u2022 有哪位知道as体用法,当介词及连词等的具体用法,举例... 更多关于to 的用法的问题>> 查看同主题问题:用法 介词 其他回答 共 5 条一、介词to的常见用法 1.动词+to a)动词+ to adjust to适应, attend to处理;照料, agree to赞同, amount to加起来达…, belong to属于, come to达到, drink to为…干杯, get to到达, happen to发生在某人身上, hold to紧握, lead to通向, listen to听, occur to想起, object to反对, point to指向, respond to回答, refer to参考;指的是…;涉及, reply to回答, see to负责, stick to坚持, turn to求助, write to给某人写信。 b)动词(+sth.)+to+sb. announce to通知某人, describe to向某人描述, explain to向某人解释, express to对某人表达, mention to提及, nod to向某人点头, report to报告, say to告知, shout to对某人大叫, suggest to对某人提建议,speak to与某人交谈, talk to跟某人谈话, whisper to和某人低声耳语。 c)动词+sth./sb.+ to +sth./sb. add to增加, compare to比作, carry to运送至, devote to致力于,introduce to介绍给, invite to邀请参加, join to连接到, leave to委托给,reduce to下降至, sentence to判处, take to带到。 2. be +形容词/过去分词+ to be alive to觉察;晓得, be attentive to注意;留心, be awake to知晓, be blind to缺乏眼光, be close to紧挨着, be common to对某人来说很普通, be contrary to违反;反对, be devoted to致力, be deaf to不愿意听, be equal to有…的力量, be exposed to暴露;遭受, be fair to对…公平, be familiar to对某人来说熟悉, be grateful to对某人心存感激, be good to对…有好处, be harmful to对…有危害, be important to对…重要, be kind to友好对待, be known to周知于, be married to嫁给, be moved to转移到, be near to靠近, be necessary to对…有必要, be opposite to在对面, be opposed to反对, be pleasant to合某人之意, be proper to专属, be polite to礼貌待人, be rude to粗暴对待, be relative to与…有关, be strange to不习惯, be similar to类似, be suitable to适合, be true to忠实, be thankful to感激, be useful to对…有用, be used to习惯。 3.to+名词构成的词组 to a degree在某种程度上, to date到现在为止,to one"s feet跳起来,to one"s mind照…看来, to one"s surprise使…吃惊,to one"s taste符合胃口, to oneself独自享用, to order定做,to the letter不折不扣地, to the point中肯地
2023-08-10 09:42:401

大学英语作文how to spend your free time怎么写?

Now I am a university student . I have been accustomed to the new life because I find the college life is so interesting that I have been attracted so much. So i think as a college student we have many things to do . First I think we should take as many activities as we can to train ourselves and in the meanwhile we can learn a lot from others.Second we should try to devote more time to learning because it is a good place for us to learn . There are varieties of books in the library and many intelligent people.They are all we can learn from. Finally we should spare some time to do volunteer work, which is significant to society.
2023-08-10 09:42:513

free socks是什么意思

free socks免费的袜子例句1.e. g. As part of their sales promotion they"re giving away a free pair of socks with each holiday.作为促销的一部分,他们每个假日都免费赠送一双袜子。2.It gets an A+ in the psychologists bag of tricks and is pretty much free, with the exception of the occasional pair of sneakers and socks.在心理学家那里快走是最佳技巧之一,而且它是免费的,除了偶尔消耗一双鞋和袜子。3.While we were taking our cat, Socks, with us, Chelsea decided she wanted to free the frog so that it could lead a normal life.尽管我们将把我们的猫“索克斯”带往华盛顿,切尔西却决定要放了青蛙,这样青蛙就可以过上“正常的生活”。
2023-08-10 09:43:161

Free Fly 的歌词

When I said go I never meant awayYou ought to knowthe freaky games we playcould you forgiveand learn how to forgethear me as I"m calling out your nameFirefly come back to memake the night as bright as dayI"ll be looking out for youtell me that your lonely toofirefly come lead me onfollow you into the sunthat"s the way it ought to befirefly come back to meYou and mewe shared a misterywe were so closelike honey to the beeAnd if you tell me how to make you understandI"m minor in a major kinda wayFirefly come back to memake the night as bright as dayI"ll be looking out for youtell me that your lonely toofirefly come lead me onfollow you into the sunthat"s the way it ought to befirefly come back to meFly firefly through the skycome and play with my desiredon"t be long don"t ask whyI can"t wait another nightFly firefly through the skywait another nightFirefly come back to memake the night as bright as dayI"ll be looking out for youtell me that your lonely toofirefly come lead me onfollow you into the sunthat"s the way it ought to befirefly come back to meFirefly come back to memake the night as bright as dayI"ll be looking out for youtell me that your lonely toofirefly come lead me onfollow you into the sunthat"s the way it ought to befirefly come back to me
2023-08-10 09:43:283

Love Will Lead You Back 歌词

歌曲名:Love Will Lead You Back歌手:Kyla专辑:HeartfeltSaying goodbyeis never an easy thingBut you never said,that you"d stay foreverSo if you must goWell, darlin", I"ll set you freeBut I know in timeThat we"ll be togetherOh, I won"t tryTo stop you now from leavingCause in my heart I knowLove will lead you backSomeday I just know thatLove will lead you back to my armsWhere you belongI"m sure, sure as stars are shiningOne day you will find me againIt won"t be longOne of these daysOur love will lead you backOne of these nightsWell I"ll hear your voice againYou"re gonna say,Oh, how much you miss meYou walked out this doorBut someday you"ll walk back inOh, darling I knowOh, I know this will beSometimes it takes,Sometime out on your own nowTo find your way back homeLove will lead you backSomeday I just know thatLove will lead you back to my armsWhere you belongI"m sure, sure as stars are shiningOne day you will find me againIt won"t be longOne of these daysOur love will lead you backBut I won"t try to stop you now from leavingCause in my heart I know...oh yeahLove will lead you backSomeday I just know thatLove will lead you back to my armsWhere you belongI"m sure, sure as stars are shiningOne day you will find me againIt won"t be longOne of these daysOur love will lead you backLove will lead you backSomeday I just know thatLove will lead you back to my armsIt won"t be longOne of these daysOur love will lead you backhttp://music.baidu.com/song/2898302
2023-08-10 09:43:381

帮忙翻译“A Complaint free world .org. SPIRIT"

一个没有痛苦的世界
2023-08-10 09:43:474

my view on free time的英语作文

My view on part-time jobs Some people say that college students should take up part-time jobs because they have much more free time than in the high school. While the others worry about that taking part-time jobs may have negative effects on study. In my opinion, I think part-time jobs have both advantages and disadvantages. 一些人说大学生应该去兼职,因为他们有很多空余的时间。而另外一些人则认为参加做兼职会对学习有负面影响。在我看来,我认为兼职有利有弊。 On one hand, part-time jobs can broaden students" horizon and make their free time more colorful. They do not only have the life on campus but also have many social activities. In this way, they can lead to a varied life. What"s more, their personal development can be enhancing to a better level. Some part-time jobs can have great contribute to the society. For instance, to be a volunteer in the orphanage, or do some cleaning for the community. Through these work, the students will realize their personal value and know that they are capable people. The part-time jobs also help the students to realize that making money is not easy, they should appreciate that their parents hard working. With the money they earn, they can buy the things they want and reduce the family"s economic burdens. 一方面,兼职能够扩宽学生的眼界让他们的课余生活更加丰富多彩。学生们不光光有校园生活,也有诸多的社会活动。在这种情况下,他们的生活多姿多彩。更重要的是,他们的个人发展能上升到一个更好的水平。一些兼职,能对社会有很大的贡献。例如说,去孤儿院当志愿者,或者会社区做些清洁工作。通过这些工作,学生们会体会到个人价值,知道自己是个有用的人。而兼职也让学生们知道挣钱不易,他们应该体谅父母的辛勤劳动。通过兼职赚了钱,就能够减轻家里面的经济负担了。 On the other hand, part-time jobs could have negative effects, too. The part-time jobs may take up too much of the free time that students would have no time to relax and study. What"s worse, some students may play truant in order to make more money. Some students even go to jail because they come under the influence of bad people through part-time jobs. 另一方面,兼职也会有负面影响。兼职会占用过多的空闲时间导致学生没空学习休息。更糟糕的是,一些学 生可能会旷课去兼职,以此赚取更多的钱。一些学生甚至进了监狱因为在业余工作中受到坏人的影响。 In conclusion, doing part-time jobs have both advantages and disadvantages. Students have to find a balance between their study and the jobs. After all, the main job of the students is to study. 总的来说,做兼职有利有弊。学生们应该在兼职和学习中找到平衡点。毕竟,学生的主要工作是学习。
2023-08-10 09:44:231

英文歌开头是:one two .one two three free.

Creepin" Up On You
2023-08-10 09:44:334

求英语作文on college students free time

cries of pain reverberate in my hear
2023-08-10 09:44:442

I have no desire other than to lead a quiet life, ______ from anxiety. A.absent B.separate .

C 考查词义辨析。absent缺席的,separate 单独的,free 自由的,short 短缺的,短语:free from 摆脱,句意:我没有什么欲望除了过安静的生活,摆脱忧虑。所以选C。
2023-08-10 09:45:101