mary

女。mary一、含义：n. 圣母玛利亚；玛丽（女子名）二、用法名字含义完美的人，苦难，昵称Mally、Mamie 通常英语形式的玛丽亚，拉丁形式的新约希腊名字Μαριαμ（玛丽亚）和Μαρια（玛丽亚） - 拼写可互换 - 这是从希伯来语u05deu05b4u05e8u05b0u05d9u05b8u05dd（Miryam），一个名字由摩西的姐妹在老遗嘱。意思是不知道的，但有几种理论，包括“苦海”，“叛逆”和“希望为孩子”。I didn"t bargain for Mary arriving so soon.我没想到玛丽来得这么快。扩展资料：情侣名：Jacob。Jacob一、含义：n. 雅各布(男子名)二、用法名字含义愿上帝保佑，这个希伯来语名字的意思是“比预期中还要好” 愿上帝保佑 从拉丁语Iacobus，这是从希腊语Ιακωβοu03c2（Iakobos），这是从希伯来语名字u05d9u05b7u05e2u05b2u05e7u05b9u05d1（Ya"aqov）。在旧约雅各（以后称为以色列）是以撒和利贝卡的儿子，以色列十二个部落的十二个创始人的父亲。Jacob wagered his donkey, he did not bet his ass.雅各布担保了他的驴子，他并没有打赌他的屁股。

玛丽(女子名)

1、Mary英[u02c8meu0259ri]美[u02c8meri]。 2、n.马利亚（耶稣的母亲；通称“圣母马利亚”、“圣马利亚”或“圣母”；据《圣经》福音书记述；她是处女；已同约瑟订婚；因受圣灵的力量怀上耶稣；自基督教产生以来；一直受到天主教派和东正教派的敬仰；宗教节日为1月1日 ［罗马天主教］、3月25日 ［天使报喜节］、8月15日 ［圣母升天节］和9月8日 ［圣母无沾成胎节］）; 玛利（1867—1953；Princess Victoria Mary of Teck；英国乔治五世皇后）; （澳大利亚混杂语）土著妇女；土著姑娘; 3、[例句]The young people have claimed almost daily visitations from the Virgin Mary.这些年轻人说几乎每天都会看到圣母马利亚显圣。

　　基本要求　　1.格式　　平时的小作业有essay 和 report 两种格式　　essay --- 结构分为introduction, main body, 和 conclusion. 不用太复杂的结构　　Report ----- 要有 executive summary, 结构要求很高，文章分为几个部分，每个部分都要有大标题，下面还要有副标题，等等。(可以参考一起附上的report例文的结构)　　2.References问题　　文章一定要有references (参考文献), 就是引用别人文章中的观点，但是这个引用不能整断整段的直接用书上，网上的文章，或者杂志上的文章的内容。如果一段话中有超过三个词是引用的，就要表明 references. (如果完全是用自己的语言将别人的观点说出来了，引用的词是两个或更少，就可以不用标出references)。　　*如果整段要直接引用原话，要用引号标出，而且这样的引用的比率不能超过全文字数的5%。　　*全文注明references的文字,就是引用的文字不能超过全文字数的30%.　　*References (参考文献)可以是书，也可以是学术杂志上发表的文章，或者网上的文章，但是引用的文章最好大多数是近十年的文章，而且References一定要按照正确方法标注。　　References 在文中是在文中用自己的话说出别人书中或文章中的内容后，用括号标出作者和年代，而在文后的references列表中一定要用Harvard references system的格式来标出参考文献。　　参考文献的数量也是有要求的，一般是每1000 字要有5个references.　　3.字数问题　　字数也是要按照要求写的，否则会扣分　　文后的references列表和附录 (appendix)是不算字的。　　比如，文章要求如果是4000字，那正文的字数就是4000 +/- 10% 字。　　如果要求no more than 4000 words, 那正文的字数就不能超过4000字。　　如果要求 no less than 4000 words, 那正文的字数就不能少于4000字。　　如果要求4000-4500 words, 那正文的字数就要写4000-4500字之间。　　4.人称问题　　因为写的作业都属于学术文章，所以不能用第一人称(I, we, in my opinion,…) 这样主观的说法, 可以用被动语态。　　*不能说 I DO STH， 要说 XX HAS BEEN DONE。。。特别是写REPORT的时候， 老师喜欢看到被动语句　　5.Introduction和Executive summary 的区别　　Introduction: 不能在introduction说出文章的结论，introduction是对文章的要写内容的介绍，结构的介绍。　　Executive summary: 阐述文章得出的finding, conclusion, recommendations.　　(这个文件的最后几页有两者比较的具体阐述，如果需要可以看看。)　　写作内容注意事项　　1. 英国人的思维是反方向的，所以，我们写东西也要这样。　　不要在文章开始就写出结论(你自己的观点)，而是要先阐述能验证结论的论证，最后在得出结论。　　比如我们的习惯，是先有观点譬如：我想吃蔬菜，(这就是你的观点)，然后你会去论证你的观点，譬如：我今天需要补充维生素，维生素对于我身体有好处，(这些是你的论证)，这些论证放在一起，就是你对观点“我想吃蔬菜”的总结，而在外国人眼里，你要先说“蔬菜有很多的维生素”，都有哪些种每一种对人体有什么好处你为什么要吃蔬菜，，最后再说出你的观点，“我想吃蔬菜”，这样就是有说服力的说法，可以的话在举个Reference什么的，“人或者离不开蔬菜”看看那个明人说过，拿来就可以引用一下。　　2. 得出结论的时候要把自己的观点放在最前面，因为自己的观点在他们的眼里才是最重要的，Reference要引用人说的东西，要放在自己观点后面，作为辅助，证明自己观点使用，不要他人家观点写出来，自己再作分析，因为，论文要看得是你想的东西，人家观点已经是得出来的结果，用结果在写分析，老师会觉得你没有自己的观点，甚至认为你是抄的。　　3. 引用观点的时候不要整段引用，挑出关键词，多过3个字，要标明那里引用的，如果需要大量引用观点,不妨尝试把观点拆开引用,并且在每个观点之前先写上自己的观点,或者理解. 如果你引用不够三个字,可以不标明为Reference可以直接使用,当作自己的观点.　　还有一点我觉得，就是可以根据老师给的资料，HANDOUT和推荐的书写，不要盲目的全部在GOOGLE上搜。特别如果那本书是你老师写的而且他有推荐你去看去买的话，就引用点里面的做REFERENCE　　4. 英国老师很喜欢表格,图表,等等,来表示各种数据,在他们看来这是专业的象征,所以只要是和数字有关的,不妨都多画一个图表,excel就可以帮你画里面什么样子的都有，立体的平面的，把你文章里的数据套进去就可以，尝试一下，效果不错，数据可以是你验证后得到的，也可以使自己估计的，详细地要文章解释。　　5. 千万不要为了凑字数，车轱辘话，来回绕，得不偿失，但是可以从不同的角度来验证自己这句话，或者人家的话，不同角度一写字数就多了，而且只要这个观点是对的，老师会觉得你很有见地，分析全面，而且只会长分，不会减分。

歌曲名:Mary歌手:Kings Of Leon专辑:Come Around SundownKings Of Leon - MaryMary, if you want toI"ll wave my rightI"d be on the cornerJust passin" timeNo I won"t, never once, make you cryJust to kiss, oh and I"ll miss your goodbyeha ha ha ha ha haWe"ll go to the discoWe"ll be desiredOh and we"ll dance like we"re boy friendsIt"s sheer delightNo I won"t, never once, make you cryWith the kiss, how I"ll miss your goodbyeNo I won"t, never once, make you cryJust to kiss, oh and I"ll miss your goodbyeha ha ha ha ha hahttp://music.baidu.com/song/52604916

歌曲名:Mary歌手:Kings Of Leon专辑:Come Around SundownKings Of Leon - MaryMary, if you want toI"ll wave my rightI"d be on the cornerJust passin" timeNo I won"t, never once, make you cryJust to kiss, oh and I"ll miss your goodbyeha ha ha ha ha haWe"ll go to the discoWe"ll be desiredOh and we"ll dance like we"re boy friendsIt"s sheer delightNo I won"t, never once, make you cryWith the kiss, how I"ll miss your goodbyeNo I won"t, never once, make you cryJust to kiss, oh and I"ll miss your goodbyeha ha ha ha ha hahttp://music.baidu.com/song/7491294

"A ship crosses the end of world, drive onto unknown ocean and hang on the ship"s bow although one noodles" ising satisfied is fall off by rains and winds but still gorgeous and matchless flag, on the flag, the dance moves cloud dragon general of four words be flickering to give out light-surmount extreme limit!"Author Hemingway is to evaluate his work so 《old man and sea 》. 《Old man and sea 》this book tell such a story:The Cuba old fisherman"s holy land second elder brother didn"t catch fish continuously for 84 days, is see by the another fisherman do failed, but he insists unremittingly and finally snaring a big marlin, the big marlin dragged along his boat"s on the water three genius utterly exhausteds, was killed by him to bind in the part of boat, encounter an assault of shark again and again in return the distance, he ran out available means to counter-attack.Remains a fish head fish tail with a spine just while returning to harbor.Though the fishes were all bite to go to, what can"t also trample upon his brave will. The holy land second elder brother is an old man of wretchedness.Hemingway molded this image by the language of oneself refinement, can say, Hemingway didn"t give the old man the success, but gave an old man the image of grace but fortitude and resilience is under the pressure. Hemingway"s this novel had the honor of acquiring Nobel literature prize and the Pu benefit plan prize.Stay to there are several 100 pieces of dauntless person writers which play a slice in this bone, fittingly wrote the strengths of life, tell us how face to living, old, disease, dead, tell us that the heart should have many breadths.The old man is standing alone, he is the trip person who comes forward a line in the ideal road, but he again not standing alone of, because his will is that so strong. Read this book, my heart once in a very long while can"ted be calm and this is common but again the worthy of respect old man make me deeply know:Being the person shouldn"t be accept defeat by any difficulty, should offer own utmost effort and life in of whet difficult do an unyielding conflict. The human nature is violent, the mankind have an own limit, but is exactly because had an old fisherman thus of the person surmounts them to the limit challenge once and with a run, this limit is just an extension, a time puts a larger challenge at mankind"s in front.On this meaning, old fisherman"s holy land second elder brother so of hero, ignore them to challenge limit is a success or fail, all is worthy of we esteem highly forever.Because, his bringing our is the mankind"s most noble self-confidence. The life is originally a kind of unending pursue.It of the road be endless and difficult, and be full of frustrated, but as long as oneself is brave to stubbornly greet a challenge by a self-confident heart, will be a real victor forever. Before, I do what matter as long as is a little bit not smooth, will shrink back, sometimes also say up several words for look down in the mouth.On the study, I as long as have a few examinations isn"t very ideal and then without confidence, think that oneself could not test good result.《Old man and sea 》medium, host"s Mr. and shark fight, the fishing spear was taken by the shark, he bind penknife in the oar to chase up.The knife broke and he used short stick.The short stick also threw away and he chased with the rudder.Be this kind of spirit which is full of confidence and chisels incessantly falsely is what I in need of? After read this book, I knew own shortage, on the study no longer because of 12 times not smooth but lose confidence, but more test not good, more want to test like. From now on, I ignore to meet what difficulty, want the confidence to hundred percently face, carry it through, will never shrink back.I want to appreciate this book, thank it for letting me learn so many knowledge, thank it for letting me know so many truths, thank it for letting me know own shortage, correct own weakness in time and make me become 1 the useful person is to the society. Might as well see the shark as stroke, eat up our success and happiness.But is saying such as that kid:"It didn"t vanquish you and it have no." A real strong, can be destroy but can"t be defeat. Never talk to hurt, this be 《old man and sea 》tell ours.

elementary,junior,primary,beginning,fragile...都可以表示初级的意思,只不过有的是比喻用法,反而更形象生动,它们的价值在具体场合才能体现.当然有差别,但不是质的差别.

其实，这两个短语在语义上并没有什么区别，都表示“上学，上课”或“在学校里”的意思。但是，当表示“上学”时，英式英语使用atschool，美式英语则常用inschool；而当表示第二种含义“在学校里”时，英式英语既使用inschool，也使用atschool；而美式英语常用inschool。这就是说，在表示上述两种含义时，美式英语都使用inschool。如：Isyourteacherinschool（英）你的老师在学校吗？（美）①你的老师在上课吗？②你的老师在学校吗？

1.国别不同：primary school是英国小学的叫法，elementary school是美国小学的叫法。2、学生年龄不同：primary school是供5到11岁孩子就读的学校。elementary school是供6到11岁孩子就读的学校。

一个是美式英语，一个是英式英语，其实这两个“小学”严格上也没有什么区别，基本上可以互换。就像美国人说秋天fall，而英国人说autumn一样。硬是要说点区别的话：从课本上文章上看，elementary school似乎更为正式，多用于书面。美国传统词典说：elementary school is a school usually for the first six or eight grades.elementary school通常提供最低的六年或八年教育的学校primary school is a school usually including the first three or four grades of elementary school and sometimes kindergarten.primary school包括初等小学的前三个或四个年级并且有时甚至包括幼稚园的学校

美国多用elementary schoo.la school for children aged from six to eleven(小学，供6到11岁孩子就读的学校)。英国多用primary school.a school for children aged from five to eleven(小学，供5到11岁孩子就读的学校)。

没什么区别一个是美式英语，一个是英式英语就像美国人说秋天fall，而英国人说autumn一样

elementary : 指属于事物的初步或起始阶段，基本的，初级的，元素的。primary可与作“初步的，初级”的elementary换用，首要的，主要，初级的，初等教育的通常不用于人，用于物时，指在重要性方面占第一位。

elementary 基本的，初级的，元素的。 The question is （elementary）。这个问题很简单。fundamental 基本的，根本的， 重要的，侧重指作为基础、根本的抽象的事物。 There is a （fundamental ）difference in attitude between these two politicians.这两位政治家的态度有着根本的区别。primary 首要的，主要， 初级的，初等教育的通常不用于人，用于物时，指在重要性方面占第一位。 The p（rimary） task for socialism is to develop the productive forces. 社会主义的首要任务是发展社会生产力。 underlying 潜在的， 隐含的，在下面的， 基本的。 This word has its （underlying） meaning. 这个单词有它潜在的含义。

primary First or highest in rank, quality, or importance; principal.首要的，主要的：在阶层，质量或重要性上处于首要的或最高的；主要的Being or standing first in a list, series, or sequence.首先的：在名单，系列或排序上处在首位的Occurring first in time or sequence; earliest.最早的：在时间和次序上首次出现的；最早的elementaryOf, relating to, or constituting the basic, essential, or fundamental part:基本的，主要的：属于或组成基本的、主要的或基本的部分的，或与他们有关的：an elementary need for love and nurturing.爱和抚育的基本需要Of, relating to, or involving the fundamental or simplest aspects of a subject:基础的，初级的：属于一门学科的最基本的或最简单的方面的，或与之有关的，或涉及该方面的：

这个问题我会，虽然本人英语口语不是很好，但是对英语四六级词汇还是很熟悉的~给大家总结了一个表格可以先粗略看一下："Primary school" 和 "elementary" 在英语中都是指小学，但是它们之间还是有一些区别的。一、含义解释及音标：- Primary school：（英）/u02c8prau026amu0259ri skuu02d0l/，（美）/u02c8prau026ameri skul/。指的是学龄前至11-12岁左右的学校，包括学前班和一到六年级。- Elementary：（英）/u02ccelu026au02c8mentri/，（美）/u02ccelu0259u02c8mu025bntri/。也是指学龄前至11-12岁左右的学校，包括学前班和一到六年级。二、语法使用及用法不同之处：- Primary school 和 elementary 在用法上没有明显区别，都是指小学。- 不同国家和地区的教育系统可能有所不同，使用的术语也有所不同。比如，在英国、澳大利亚和新西兰等国家，使用 primary school；而在美国和加拿大等国家，使用 elementary school。三、具体用法举例：- Primary school：- I went to primary school in England when I was a child.（我小时候在英格兰上过小学。）- In Australia, primary school covers six years, from Prep to Year 6.（在澳大利亚，小学包括学前班和一到六年级共六年。）- Elementary：- I have fond memories of my elementary school days in the United States.（我对在美国上小学的日子充满美好的回忆。）- In Canada, children usually start elementary school at the age of five or six.（在加拿大，孩子们通常在五六岁时开始上小学。）四、充分全面的决策参考：在日常使用中，primary school 和 elementary school 是可以互换使用的。但是，我们需要注意不同国家和地区的教育系统可能使用的术语不同，需要结合具体情况使用。五、类比：可以将 primary school 和 elementary school 类比成同一类事物的不同叫法。就像 "cup" 和 "mug" 都是指杯子，只是在不同的语境中使用不同的叫法一样。

不知道你找的是不是，1.Perfect Proposal - Wayne Wonder2.Will you marry me_

RosemaryBlightRosemaryBlight是一名制作人，主要作品有《重罪》《战地灵魂乐》《岩岛惊魂》。外文名：RosemaryBlight职业：制作人代表作品：《重罪》合作人物：MatthewSaville主要作品电影作品电视剧作品人物关系

你好！两个词的意思是有差异的，statistic是指统计的（数据，数字），更加精确；而summary是指摘要或总结的（内容），相对来说更加精炼希望对你有所帮助，望采纳。

statistic有统计的含义，而summary只是总和的意思。

Popular Christmas carols symbolize everything that Christmas stands for. They gather the family bring joy spread the word about Christmas and make everyone feel the Christmas spirit. Try to hum the melody of “Jingle Bells” and most people in the northern hemisphere will immediately imagine seeing snowflakes angels and Christmas bells. The world"s most widely known Xmas carol is ”Silent Night” which is sung in many languages all over the world. The song originates from Austria but enjoyed great recognition as early as the First World War. When soldiers on each side of the frontline laid down their weapons on Christmas Eve and sung the carol “Silent Night” across no man"s land. Information from the Inter. 图片参考：l.yimg/f/iugc/rte/ *** iley_1 2009-04-09 09:18:32 补充： zh. *** /wiki/%E5%B0%8F%E6%B0%A3%E8%B2%A1%E7%A5%9E - this is from *** if you want the english details pls check this: etext.virginia.edu/toc/modeng/public/DicChri 2009-04-09 09:18:36 补充： trlate.google/trlate?hl=zh-TW&sl=en&u=etext.virginia.edu/toc/modeng/public/DicChri&ei=GcvcSYjCDZiQkAWA44mmDg&sa=X&oi=trlate&resnum=3&ct=result&prev=/search%3Fq%3DChristmas%2Bcarol%26hl%3Dzh-TW%26rlz%3D1T4ADBF_zh-TWHK289 K289 yes and the questioner was asking for A Christmas Carol book report ( summary) The asker should have written " A Christmas Carol ...".

Kacey Musgraves—《Merry Go "Round》If you ain"t got two kids by 21,如果21岁还没有孩子You"re probably gonna die alone你去世时可能还是形单影只At least that"s what tradition told you.至少传统观念这么告诉你And it don"t matter if you don"t believe,你不相信上帝也没有关系Come Sunday morning you best be there可你周日最好来到教堂里In the front row, like you"re supposed to.站在前排似乎就该是惯例Same hurt in every heart.不同的人，同样伤心Same trailer, different park.不同的公园，同样的拖车Mamas hooked on Mary Kay妈妈们喜欢Mary Kay(玫凯琳)Brothers hooked on Mary Jane兄弟们喜欢抽大麻And Daddies hooked on Mary two doors down.爸爸们喜欢隔两间房的MaryMary Mary quite contrary,Mary Mary 多么矛盾We get bored so we get married我们结婚只是因为无聊And just like dust we settle in this town.如同尘埃般落在这里On this broken merry go "round and "round and "round we go,伴着这简单的乐趣我们一代一代延续Where it stops nobody knows...没有人知道它什么时候停止And it ain"t slowin" down, this merry go "round...它也从不减速迟疑We think the first time"s good enough,我们认为第一次就足够了So we hold on to high school love,所以坚持着高中的恋情Say we won"t end up like our parents.声称我们的结局不会像爸妈那样Tiny little boxes in a row,小盒子们摆了一排Ain"t what you want it"s what you know,不是想要的，只是知道的Just happy in the shoes you"re wearin".你还傻傻地为穿新鞋高兴Same checks we"re always cashin",兑现着同样的支票To buy a little more distraction.多买点东西来打发精力Cause Mamas hooked on Mary Kay妈妈们还是喜欢Mary Kay（玫凯琳）Brothers hooked on Mary Jane兄弟们仍然喜欢抽大麻And Daddies hooked on Mary two doors down.爸爸们依旧喜欢隔两间房的MaryMary Mary quite contrary,Mary Mary 多么矛盾We get bored so we get married我们结婚只是因为无聊And just like dust we settle in this town.如同尘埃般落在这里On this broken merry go "round and "round and "round we go,伴着这简单的乐趣我们一代一代延续Where it stops nobody knows...没有人知道它什么时候停止And it ain"t slowin" down, this merry go "round...它也从不减速迟疑Mary Mary quite contrary,Mary Mary 多么矛盾We"re so bored until we"re buried.直到入土我们依然无趣And just like dust we settle in this town.如同尘埃般落在这里On this broken merry go "round...一代代延续Merry go "round...延续Jack and Jill went up the hill,Jack 和Jill爬上了山Jack burned out on booze and pills,Jack 忙着喝酒吸毒And Mary had a little lamb,Mary有只小羔羊Mary just don"t give a damn no more.可Mary一点都不在乎

集中显示各个验证的结果

这是玛丽，我们要去动物园，并于星期六9点在那里看动物。你想和我们一起去吗？

英语specify the primary

小题1:C小题2:A小题3:B小题4:C小题5:C试题分析：小题1:细节理解题。根据Thatboyismybrother.HisnameisTony.那个男孩是我的弟弟，他的名字是Tony，故选C。小题2:细节理解题。根据Thesearemyparents.TheirnamesareBillandGraceBrown.可知Bill是Mary的父亲，故选A。小题3:细节理解题。根据Thosearemygrandparents.TheirnamesareHenryandLindaBrown.ThisisSusan.Sheismyuncle"sdaughter.可知Susan的祖父是Henry，故选B。小题4:细节理解题。根据Thesearemyparents.TheirnamesareBillandGraceBrown.ThisisSusan.Sheismyuncle"sdaughter.可知Grace是Susan大爷，故选C。小题5:细节理解题。根据Thatboyismybrother.HisnameisTony.ThisisSusan.Sheismyuncle"sdaughter.可知Tony和Susan堂兄妹，故选C。

选择A,Make a family tree___of____your family,做一个家族关系树状图

第一部的10集左右吧。。。

Shelly意思是多壳的,壳一般的,由壳而成的 Mary作为人名时作玛丽(女子名) 解释，具体应该结合上下文Nancy 1. 南希(女子名,涵义:温文;优雅) nancy a. 1. 很像女孩子的;女性化的 n. 1. 娘娘腔的人;女性化的人 Jane是女子名，《简·爱》的女主人公就叫Jane芭比写作barbie,是Barbara的昵称

三月1、月份的所有英文单词是：January一月；February二月；March三月；April四月；May五月；June六月；July七月；August八月；September九月；October十月；November十一月；December十二月。2、April，罗马的4月，正是大地回春、鲜花初绽的美好季节。英文4月April便由拉丁文Aprilis（即开花的日子）演变而来。3、May，罗马神话中的女神玛雅，专门司管春天和生命。为了纪念这位女神 ，罗马人便用她的名字——拉丁文 Maius命名5月，英文5月May便由这位女神的名字演变而来。4、October是英语10月，来自拉丁文 Octo，即“8”的意思。它和上面讲的9月一样，历法改了，称呼仍然沿用未变。

玛丽 天天吃苹果Mary 天天吃苹果

Don"tforgettoremembermeDon"tforgettorememberme(x2)PleasekeepmeinyourheartIfweeverhavetopartDon"tforget(getget)torememberme(T.I.:Verse1)EythekingmoderndayMLK?I"mofficiallythefreshestdon"tdareforgetI"mgone,momentarilydon"tbearmeyetLikealigotIgottitlebackpreparefordatWhentheworldneededtipAskwherehewasitButwhereheneedsomethingbackNiggafadetoblackTalkingshitbehindhisbackYouahaterforthatI"mdon"texpectnothinglessInthegamewithchessyouthink5movesaheadandnotbehindNiggasjumpedupcheeredwhenIgotmytimeLikeyeah,onewholeyearIgotinthegrindButgetmelosingoffyourmindShortymayIremindyouThatthereaintanotherniggawhodonebeenthroughwhatIbeenthroughTimeafttertimeagainyoubettergetsome?inyouWhenyousaiditwasoverforhimandyouthoughthecouldn"tcontinuetoflossHerestoyourmemorylossSuckkka(MaryJ.Blige:Chorus)Don"tforget(getget)torememberme(x2)PleasekeepmeinyourheartIfweeverhavetopartDon"tforgetforgettorememberme(T.I.:Verse2)TheysayoutofsightisoutofmindAnd9timesoutof10meand(outofpocketoutofline)?YoudoitbigeverybodythatyououtshinedThenyouroldladyfatetalkabouthowhegotfineShesayshetryingtogetawayHesayabouttimeRightnowweallthinkingdamnhopeitnotmineButwhenitslightsoutforyouandyoulockeddownAintnottellingwhetherornotyourladywhenandgotdownWiththatnigga?towncausehehotnowRippingupyourloveletters,liftinguphernightgownRightnowsomebodybabymomagettinpipeddownKidsinthenextroomlistening,imapipedownThethoughthurtdon"titButmaybeshestrongenoughforaintgetthatlonelycauseyouwasn"tgonelongenoughTrueItsjustatemporarilysetbackItsonwhenIgetbackPleasedon"tforgetdat(MaryJ.Blige:Chorus)Don"tforgettoremembermeDon"tforget(pleasedon"t)toremembermePleasekeepmeinyourheartIfweeverhavetopartDon"tforget(getget)torememberme(MaryJ.Blige:Verse1)Idon"tmeantofeellikethisDon"tmeantothinklikethisMyheartjusthastobeshownThatthelovethatIgivetoyouThat"sthelovethatIgetfromyouIneedtobesafeandsecureDon"tforgetdon"tforgettoremembermePleaseremembermeEverythingIbringtothislovelovePleasekeepmeinyourheartIfweeverhavetopartDon"tforget(get)toremembermeDon"tyou...forgetaboutme嘿嘿~给你了~虽然没分~

歌曲名:散歩道歌手:judy and mary专辑:散歩道散歩道作诗：YUKI作曲：五十岚公太编曲：JUDY AND MARY歌：JUDY AND MARYそんなふうに求めてばっかりじゃタマシイも枯れちゃうわムズかしい言叶ばっかりじゃあの娘とも仲良くなれないの向かい风にぶつかって ドッカーンて泣いて朝になって 全部忘れた 「あぁ…」フワフワ浮いてる あの云に乗れるくらい头 やわらかくしよう春の散歩道には 黄色い花かんむりが夏の散歩道には セミの行进が道をふさぐの何よりも 大切なこと 手をつなごう やわらかい风が吹く少しだけ 优しくなって 夕暮れにも 早く気付くAi Ok Uh…シアワセの形は変わってく 気付かずにのんびりとあたしが思うよりもずっとあたしの空はひろがってるんだわ秋の散歩道には カサカサ落ち叶のメロディ冬の散歩道には 氷の月が水に写るの谁よりも 大切な人 手をつなごう やわらかい风が吹く前よりも 优しくなって 见た事ない颜で 笑う Fu雨の散歩道では 濡れたベンチを横目に晴れた散歩道では 二人の影が Yeah 长く伸びるのYa Ya Ya Ya谁よりも 大切な人 手をつなごう 夸らしく前を见てつくられた地図はいらない Hi 私达の 道は続く何よりも 大切なこと 手をつなごう やわらかい风が吹く少しだけ 优しくなって 夕暮れにも 早く気付くYah ma… Ha…～END～http://music.baidu.com/song/55689722

歌曲名:散歩道歌手:judy and mary专辑:歌姫プレミア-Black-散歩道作诗：YUKI作曲：五十岚公太编曲：JUDY AND MARY歌：JUDY AND MARYそんなふうに求めてばっかりじゃタマシイも枯れちゃうわムズかしい言叶ばっかりじゃあの娘とも仲良くなれないの向かい风にぶつかって ドッカーンて泣いて朝になって 全部忘れた 「あぁ…」フワフワ浮いてる あの云に乗れるくらい头 やわらかくしよう春の散歩道には 黄色い花かんむりが夏の散歩道には セミの行进が道をふさぐの何よりも 大切なこと 手をつなごう やわらかい风が吹く少しだけ 优しくなって 夕暮れにも 早く気付くAi Ok Uh…シアワセの形は変わってく 気付かずにのんびりとあたしが思うよりもずっとあたしの空はひろがってるんだわ秋の散歩道には カサカサ落ち叶のメロディ冬の散歩道には 氷の月が水に写るの谁よりも 大切な人 手をつなごう やわらかい风が吹く前よりも 优しくなって 见た事ない颜で 笑う Fu雨の散歩道では 濡れたベンチを横目に晴れた散歩道では 二人の影が Yeah 长く伸びるのYa Ya Ya Ya谁よりも 大切な人 手をつなごう 夸らしく前を见てつくられた地図はいらない Hi 私达の 道は続く何よりも 大切なこと 手をつなごう やわらかい风が吹く少しだけ 优しくなって 夕暮れにも 早く気付くYah ma… Ha…～END～http://music.baidu.com/song/58713820

歌曲名:Buddha For Mary歌手:30 Seconds To Mars专辑:30 Seconds To MarsBuddha For Mary30 Seconds To Mars翻译:StylesOfBeyondThis is the life on marsMary was a different girlHad a thing for astronautsMary was the type of girlShe always liked to fall apartMary was a holy girlFinally wet her appetiteMary was the type of girlShe always liked to fall apartTell me did you see her faceTell me did you smell her tasteTell me what"s the differenceDon"t they all just look the same inside?See her face, smell her tasteWhat"s the difference?Don"t they all just look the same inside?Mary was an acrobatBut still she couldn"t seem to breatheMary was becoming everything she didn"t want to beMary would hallucinateAnd see the sky upon the wallMary was the type of girlShe always liked to flyTell me did you see her faceTell me did you smell her tasteTell me what"s the differenceDon"t they all just look the same inside?See her face, smell her tasteWhat"s the difference?Don"t they all just look the same inside?This is the life on marsHe said, "Can you here me, are you sleeping"She said, "Will you rape me now?"He said, "Leave the politics to mad men"She said, "I believe your lies"He said, "There"s a paradise beneath me"She said, "Am I supposed to bleed?"He said, "You better pray to Jesus"She said, "I don"t believe in god"Mary was a different girlHad a thing for astronautsMary was the type of girlShe always liked to play godMary was a holy girlFinally wet her appetiteMary was the type of girlShe always liked to fall apartTell me did you see her faceTell me did you smell her tasteTell me what"s the differenceDon"t they all just look the same inside?See her face, smell her tasteWhat"s the difference?Don"t they all just look the same inside?A simple fear to wash you awayAn open mind cancelled it today<a<http://music.baidu.com/song/7957538

逃遁的美洲狮

用单数谓语is

第一期全是A姐~A姐超萌好想念她XD。 https://gss0.baidu.com/70cFfyinKgQFm2e88IuM_a/baike/pic/item/b87985507ee8ea718535241a.jpg美丽的A姐，要想看个够的话去看看乐园LIVE吧……A姐大萌啊。 https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/honeyhong/pic/item/e3db9b504a5ce57a843524fd.jpeg这是第二期的合照……陛下真美丽的说。SH中A姐参与的是这些：2nd Story CD「Thanatos」 3rd Story CD「Lost」 1st Pleasure CD「Pico Magic」 2nd Pleasure CD「Pico Magic Reloaded」 1st Story Renewal CD「Chronicle 2nd」 Sound Horizon（Major第一期） 「Elysion～楽园への前奏曲～」 4th Story CD 「Elysion～楽园幻想物语组曲～」 Sound Horizon（Major第一期　Revo名义） 「リヴァイアサン 终末を告げし獣」（原作大冢英志） M5召还という仪式(Aramaryのみ)　M6死刑执行（Hawk Spencer/Aramary） ねとらん者 THE MOVIE #1 ネットのすみでブログと叫ぶ ED「LiNK」 ……我也是很严重的SH病了XD。

Aramary真名Mariko Arai 新井真理子，从前是舞台剧演员，亦有试过当声优(曾在中国香港播放的哪吒传奇被日本买了后，由Aramary 饰演哪吒)，而Aramary亦做过其他大大小小有关声音的工作(如为game唱主题曲等) 。 Aramary 是Sound Horizon第一期vocal。Aramary由Sound Horizon同人时代的Thanatos(Sound Horizon 自主制作2nd Story CD)加入。直至商业时代的『Elysion　～楽园パレードへようこそ～』(Sound Horizon Live)后退出。现在为rain-note的vocal。 Revo真名不明。Revo在90年代后期在网上发表音乐。2001年12月30日以同人音乐小组"Sound Horizon"名义推出1st Story CD"Chronicle"。Revo亦有以个人名义参加其他CD的创作。Revo于2005年3月2日，推出『リヴァイアサン终末を告げし獣』(画"Leviathan" Image Album)。2005年12月21日，推出『poca felicità』(动漫"Gunslinger girl" Image Album)。2006年6月14日，与霜月はるか合作推出『雾の向こうに繋がる世界』。 Aramary日文读あらまり 亚啦吗li Revo日文会读レヴォ 呢科("骑呢"的那个呢) Aramary的ma应该是读 吗 Ara系A-ra分开读 ry读li 2008-03-25 11:57:34 补充： 舞台剧那边aramary全是客串演出(或许不算是个舞台剧演员吧) 参考: zh. *** /w/index?title=Sound_Horizon&variant=zh- 如果系艺名既话... 我会叫Aramary(あらまり)做A姐(娘)or亚拉马利(伪基百科系咁写...) 至于Revo.......最近睇到日文发音系"呢啵"(レボ) 佢地既详细资料......唔多清楚........ Aramary好似系声优黎...佢退出SH之后好快接到一套外国电影既配音 其他就唔清楚喇... 而Revo佢就系帮一套GAME(太阁立志伝III)写主题曲之后开始组成SH既... 其实佢地两个都系因为SH先出名.....= ="(我觉得.....)

Vanity Fair Summary: William Makepeace Thackeray"s witty assessment of the British class system, as seen through the experiences of one young woman, is brought to the screen with some serious star power in this period comedy drama. Becky Sharp is a bright and ambitious girl born to a poor British family. Becky is determined to make something of herself however she can, and after accepting a job as a nanny for the children of the powerful and aristocratic Sir Pitt Crawley, she wastes no time ingratiating herself with the family. Pretty Becky catches the eye of Crawley"s handsome and eligible son Rawdon, and becomes chummy with sharp-tongued Aunt Matilda. Between the two of them, Becky is introduced to London"s most exclusive social circle, where she becomes re-acquainted with Amelia Sedley, a former school chum who is amused by Becky"s efforts to scale the ladder of social influence. Becky weds Rawdon, but following initial happiness, the social and economic stability she dreamed of begins to collapse when he begins drowning his troubles in gambling and drink, and soon she turns to the powerful Marquess of Steyne for support. Meanwhile, Amelia"s fortunes fall even harder following the death of her husband.记得采纳啊

[A] abstract = 摘要(学术界/论文用)定义:1.a condensed version of a piece of writing,speech,etc.; summary;synopsis2.a brief statement that presents the main points in a concise form; summary;synopsis3.a sketchy summary of the main points of an argument or theory; outline; precis;例句:(a) If you want to submit a paper,you must supply an abstract.(b) Abstracts of scietific/medical/technical reports...[B] summary = 摘要/概要/总结;(大众 general public 普通用)定义:1.A presentation of the substance of a body of material in a condensed form or by reducing it to its main points; 例句:(a) he gave a summary of the conclusions(b) a summary of a book; economic report etc.(c) Here"s a summary of the day"s news.(d) A summary of his speech was printed in the newspaper.

就是要你写创新点。一般一篇论文有2-3个创新点就行了。其写法是：本文提出了（propose）什么什么，构建了（construct）什么什么，修正了（modify）什么什么。

summary和outline当动词讲时，summary 是“概括，总结”outline是“概述”outline还可以当“轮廓，描画...的轮廓”似乎和画画方面还有点联系，当名词讲时有“大纲，概要，略图”for instance,:It may be briefly summarized in the following outline.这可以用下面的提纲简短地加以概括。这里outline是“提纲”的意思。as for“outview”,这个很少见，只记住“stretch-outview展开图”就好了。

歌曲名:Mary Did You Know歌手:Spoken专辑:Happy Christmas Vol. 4Mary, did you know?edit bt hideMary, did you knowThat your baby boy will some day walk on water?Mary, did you knowThat your baby boy will save our sons and daughters?Did you knowThat your baby boy has come to make you new?This child that you"ve deliveredWill soon deliver youMary, did you knowThat your baby boy will give sight to a blind man?Mary, did you knowThat your baby boy will calm a storm with His hand?Did you knowThat your baby boy has walked where angels trod?And when you kiss your little babyYou"ve kissed the face of GodMary, did you know?Mary, did you know?The blind will seeThe deaf will hearAnd the dead will live againThe lame will leapThe dumb will speakThe praises of the LambMary, did you knowThat your baby boy is Lord of all creation?Mary, did you knowThat your baby boy will one day rule the nations?Did you knowThat your baby boy is heaven"s perfect Lamb?This sleeping child you"re holdingIs the Great I Amhttp://music.baidu.com/song/2927782

歌曲名:Mary Did You Know歌手:Michael English专辑:Christmas HomecomingTitle:"Mary did you Know"Artist:Hayley WestenraMary, did you knowthat your baby boy would one day walk on water?Mary, did you knowthat your baby boy would save our sons and daughters?Did you know,that your baby boy has come to make you new?And the child that you delivered, would soon deliver you.Mary, did you knowthat your baby boy would give sight to the blind man?Mary, did you knowthat your baby boy would calm a storm with his hand?Did you know,that your baby boy has walked where angels trod?And when you kiss your little baby,you"ve kissed the face of God.Oh Mary, did you know?~ Instrumental Break ~The blind will seeThe deaf will hearThe dead will live again.The lame will leapThe dumb will speakThe praises of The Lamb.Oh Mary, did you knowthat your baby boy is Lord of all creation?Mary, did you knowthat your baby boy will one day rule the nations?Did you know,that your baby boy is Heaven"s perfect lamb?And the sleeping child you"re holding, is the great I AM.Oh Mary. Oh Mary.http://music.baidu.com/song/2774443

歌曲名:Mary, Did You Know歌手:The Isaacs专辑:ChristmasTitle:"Mary did you Know"Artist:Hayley WestenraMary, did you knowthat your baby boy would one day walk on water?Mary, did you knowthat your baby boy would save our sons and daughters?Did you know,that your baby boy has come to make you new?And the child that you delivered, would soon deliver you.Mary, did you knowthat your baby boy would give sight to the blind man?Mary, did you knowthat your baby boy would calm a storm with his hand?Did you know,that your baby boy has walked where angels trod?And when you kiss your little baby,you"ve kissed the face of God.Oh Mary, did you know?~ Instrumental Break ~The blind will seeThe deaf will hearThe dead will live again.The lame will leapThe dumb will speakThe praises of The Lamb.Oh Mary, did you knowthat your baby boy is Lord of all creation?Mary, did you knowthat your baby boy will one day rule the nations?Did you know,that your baby boy is Heaven"s perfect lamb?And the sleeping child you"re holding, is the great I AM.Oh Mary. Oh Mary.http://music.baidu.com/song/2616675

Mary did you know, that your baby boy,will one day walk on water? 玛丽亚，你知道吗？ 你的婴孩，有一天会在水上行走 Mary did you know, that your baby boy, will save our sons and daughters? 玛丽亚，你知道吗？ 你的婴孩，将要拯救我们的儿女 Did you know that your baby boy, has come to make you new, 玛丽亚，你知道吗？你的婴孩，他来，为要使你成为新造的人 this child that you delievered, will soon deliever you 你所生的孩子，不久，他要使你重生。 Mary did you know, that your baby boy, will give sight to a blind man, 玛丽亚，你知道吗？你的婴孩, 将使瞎眼的得看见 。 Mary did you know, that your baby boy, will calm a storm with his hand, 玛丽亚，你知道吗？你的婴孩, 他的手将平静风和海。 Did you know, that your baby boy, has walked where angels trod, 你知道吗？你的婴孩, 曾走过天使走过的地方。 and when you kiss your little baby, you"ve kissed the face of God, 当你亲吻你的小宝贝时，可知道你正亲吻 上帝的脸？ the blind will see, the deaf will hear, and the dead will live again, 瞎眼的要看见，耳聋的要听见，死人要复活， the lame will leap, the dumb will speak, the praises of the Lamb. 瘸腿的要跳跃，哑巴的要说话，赞美神羔羊 Mary did you know, that your baby boy, is Lord of all creation, 玛丽亚，你知道吗？你的婴孩, 是一切被造物的主 Mary did you know, that your baby boy, will one day rule the nations, 玛丽亚，你知道吗？你的婴孩，有一天要统治万民 Did you know that your baby boy, is heaven"s perfect lamb, 你知道吗？你的婴孩, 是天国圣洁完美的羔羊 this sleeping child your holding, is the great I AM 你怀中安睡的婴儿，是那伟大的 自有永有的　神

The primary end point 主要终点primary 英[u02c8prau026amu0259ri] 美[u02c8prau026ameri] adj. 首要的，主要的; 最早的，原始的; [地质学] 原生的; 基本的; n. 第一位; 最好者; 要素; 候选人提拔会;

歌曲名:Proud Mary歌手:猫王专辑:Concert (1999 World Tour)Proud Maryby John Fogerty / Elvis PresleyLeft a good job in the city,Working for The Man every night and day,And I never lost one minute of sleeping,Worrying "bout the way things might have been.Big wheel keep on turning,Proud Mary keep on burning,Rolling, rolling, rolling on the river.Cleaned a lot of plates in Memphis,Pumped a lot of pain down in New Orleans,But I never saw the good side of the city,Until I hitched a ride on a river boat queen.Big wheel keep on turning,Proud Mary keep on burning,Rolling, rolling, rolling on the river.Rolling, rolling, rolling on the river.If you come down to the river,Bet you gonna find some people who live.You don"t have to worry "cause you have no money,People on the river are happy to give.Big wheel keep on turning,Proud Mary keep on burning,Rolling, rolling, rolling on the river.Rolling, rolling, rolling on the river.Rolling, rolling, rolling on the river.Rolling, rolling, rolling on the river.edit morrison tsaihttp://music.baidu.com/song/1264474

歌曲名:Proud Mary歌手:Tina Turner专辑:All The BestTina Turner - Proud Mary (1993 Version)You know, every now and thenI think you might like to hear something from usNice and easy but there"s just one thingYou see, we never ever do nothing nice and easyWe always do it nice and roughSo we"re gonna take the beginning of this song and do it easyThen we"re gonna do the finish roughThis is the way we do "Proud Mary"And we"re rolling, rolling, rolling on the riverListen to the storyLeft a good job in the cityWorking for the man every night and dayAnd I never lost one minute of sleepingWorrying "bout the way that things might have beenBig wheel keep on turningProud Mary keep on burningAnd we"re rolling, rollingRolling on the riverCleaned a lot of plates in MemphisI pumped a lot of tane down in New OrleansBut I never saw the good side of the cityUntil I hitched a ride on the riverboat queenBig wheel keep on turningProud Mary keep on burningAnd we"re rolling, rollingRolling on the riverSay, we"re rolling, rollingRolling on the riverI left a good job in the cityWorking for the man every night and dayAnd I never lost one minute of sleepingWorrying "bout the way things might have beenBig wheel keep on turningProud Mary keep on burningRolling, rollingRolling on the riverSay, we"re rolling, rollingRolling on the river, the riverI cleaned a lot of plates in MemphisAnd I pumped a lot of tane down in New OrleansBut I never saw the good side of the city"Til I hitched a ride on the riverboat queenBig wheel keep on turningProud Mary keep on burningAnd we"re rolling, so we"re rollingAnd we"re rolling on the riverI tell you, we"re rolling, rollingWe"re rolling on the riverIf you come down to the riverI bet you gonna find some people who liveAnd you don"t have to worry if you got no moneyPeople on the river are happy to giveBig wheel keep on turningProud Mary keep on burningAnd we"re rolling and we"re rollingAnd we"re rolling on the riverTell me one more time(Rolling, rolling, rolling on the river)http://music.baidu.com/song/2219407

歌曲名:Proud Mary歌手:Creedence Clearwater Revival专辑:Proud MaryProud Maryby John Fogerty / Elvis PresleyLeft a good job in the city,Working for The Man every night and day,And I never lost one minute of sleeping,Worrying "bout the way things might have been.Big wheel keep on turning,Proud Mary keep on burning,Rolling, rolling, rolling on the river.Cleaned a lot of plates in Memphis,Pumped a lot of pain down in New Orleans,But I never saw the good side of the city,Until I hitched a ride on a river boat queen.Big wheel keep on turning,Proud Mary keep on burning,Rolling, rolling, rolling on the river.Rolling, rolling, rolling on the river.If you come down to the river,Bet you gonna find some people who live.You don"t have to worry "cause you have no money,People on the river are happy to give.Big wheel keep on turning,Proud Mary keep on burning,Rolling, rolling, rolling on the river.Rolling, rolling, rolling on the river.Rolling, rolling, rolling on the river.Rolling, rolling, rolling on the river.edit morrison tsaihttp://music.baidu.com/song/7477969

歌曲名:Hail Mary歌手:2Pac专辑:HipHop Classics CollectionCorrinne May - Hail Mary猫咪回来吧，狗狗一直在等你Hail Mary, full of gracethe Lord is with theeblessed art thou amongst womenand blessed is the fruit of thy wombblessed is the fruit of thy wombHoly Mary, Mother of Godpray for us sinners now and atthe hourthe hour of our death2009.06.01 9猫咪回来吧，狗狗一直在等你http://music.baidu.com/song/59376686

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25.72

歌曲名:Mary Jane (All Night Long)歌手:Mary J. Blige专辑:Mary / Share My World / The TourAlanis Morissette - Mary Jane(Acoustic)What"s the matter Mary Jane, you had a hard dayAs you place the don"t disturb sign on the doorYou lost your place in line again, what a pityYou never seem to want to dance anymoreIt"s a long way downOn this roller coasterThe last chance streetcarWent off the trackAnd you"re on itI hear you"re counting sheep again Mary JaneWhat"s the point of trying to dream anymoreI hear you"re losing weight again Mary JaneDo you ever wonder who you"re losing it forWell it"s full speed babyIn the wrong directionThere"s a few more bruisesIf that"s the wayYou insist on headingPlease be honest Mary JaneAre you happyPlease don"t censor your tearsYou"re the sweet crusaderAnd you"re on your wayYou"re the last great innocentAnd that"s why I love youSo take this moment Mary Jane and be selfishWorry not about the cars that go byAll that matters Mary Jane is your freedomKeep warm my dear, keep dryTell meTell meWhat"s the matter Mary Jane...Tell mehttp://music.baidu.com/song/8773348

设置主键列

这要看主键ID是什么类型的了，如果主键是String型的，就可以写成.findByPrimarykey(String id);当然写成.findByPrimarykey(TPermSetVo id);这样子也可以，也可以通过TPermSetVo获取主键的，这个.findByPrimarykey(TPermSetVo);是错的

一般情况下是不会出现这个问题啊。 你试试把约束先删除，然后再备份。 ALTER TABLE T_ZB_KC_YEAR DROP CONSTRAINT PK_T_zb_kc_year_5A1A5A11 用时再添加吧、

ak是附键PK表示主键,AK表示附键,FK表示外键,CK表示检查条件

primary key与unique key都是唯一性约束。但二者有很大的区别： 1.作为primary key的1个或多个列必须为NOT NULL， 如果建表时此列设为NULL，在增加PRIMARY KEY时，列自动更改为NOT NUL

注意看 constraint 是表示 它是个约束; primary key 表示是个主键约束 所以 constraint pk_course primary key (cno,tno)表示 course表上存在一个名字叫“pk_course”的主键约束 ，它的主键列是 cno,tno的组合列下面那个同理表示 SC表上存在一个名字叫“pk_sc”的主键约束 ，它的主键列是 sno,cno的组合列这是primary key的资料：

楼上说的对

你这段代码在我的sql2012中是正常的

主关键字(primary key)是表中的一个或多个字段，它的值用于唯一地标识表中的某一条记录。在两个表的关系中，主关键字用来在一个表中引用来自于另一个表中的特定记录。主关键字是一种唯一关键字，表定义的一部分。一个表的主键可以由多个关键字共同组成，并且主关键字的列不能包含空值。主关键字是可选的，并且可在 CREATE TABLE 或 ALTER TABLE 语句中定义。详见百科：http://baike.baidu.com/link?url=oRMk-4g3AAOIHbv5e_2xy9prhYKt4j-rUakyZ_3MhcaCRT3iMhSEDefo-5nzLvvLOQ0Jp_reguItF5Bp4DTqtGTJSy76N-qSWyWaJ7WQJD3pS2h4wsnMnjQqRFLWC6WH

数据库的表不一定有primarykey才能正常建立。根据相关信息查询，就是简单的对单表操作的话，没必要。对多张没有关联的表操作，不设置没有影响主键只是说对一种表和表关系的关联，在建主键的时候会自动添加个索引，某些情况下可以增加查询速度。

转：u2022primary key与unique key都是唯一性约束。但二者有很大的区别： u20221.作为primary key的1个或多个列必须为NOT NULL， u2022 如果建表时此列设为NULL，在增加PRIMARY KEY时，列自动更改为NOT NULL。 u2022 而unique key约束的列可以为null，这是primary key与unique key最大的区别。 u20222.一个表只能有一个primary key(单列或多列，多列主键叫联合主键)，但可以有多个unique key。 u2022实例1: u2022create table t(c1 number(2),c2 date,c3 varchar2(5),c4 int); u2022desc t; u2022Name Type Nullable Default Comments u2022---- ----------- -------- ------- -------- u2022C1 NUMBER(2) Y u2022C2 DATE Y u2022C3 VARCHAR2(5) Y u2022C4 INTEGER Y u2022// u2022实例2:添加primary key u2022alter table t add constraint t_pk primary key(c1,c2); u2022desc t; u2022Name Type Nullable Default Comments u2022---- ----------- -------- ------- -------- u2022C1 NUMBER(2) u2022C2 DATE u2022C3 VARCHAR2(5) Y u2022C4 INTEGER Y u2022我们看到，将c1，c2列设为联合主键后，他们变为not null； u2022如果在建表时就指定了主键的话，主键列将会默认为not null。 u2022// u2022如果我们在添加一个primary key，那么我们将会得到一个错误： u2022alter table t add constraint t_pk_2 primary key(c3,c4) u2022ORA-02260: table can have only one primary key u2022// u2022实例3:添加unique key u2022alter table t add constraint unique_key_t unique(c3,c4); u2022实例4:添加数据 u2022insert into t(c1,c2,c3,c4) u2022values(10,sysdate,"abc",3); u20221 row inserted u2022// u2022insert into t(c1,c2,c3,c4) u2022values(11,sysdate,"abc",3); u2022ORA-00001: unique constraint (SCOTT.UNIQUE_KEY_T) violated u2022我们看到，添加的第二条数据违反了刚刚创建的唯一键约束; u2022将unique_key_t删除，添加就能成功了。 u2022实例5:删除unique key u2022alter table t drop constraint unique_key_t; u2022insert into t(c1,c2,c3,c4) u2022values(11,sysdate,"abc",3); u20221 row inserted u2022// u2022实例6:删除primary key u2022alter table t drop constraint t_pk; u2022Table altered u2022// u2022desc t; u2022Name Type Nullable Default Comments u2022---- ----------- -------- ------- -------- u2022C1 NUMBER(2) Y u2022C2 DATE Y u2022C3 VARCHAR2(5) Y u2022C4 INTEGER Y u2022删除主键约束后，c1，c2列由恢复了原来的默认值null。 u2022// u20223.其实primary key也是unique key，被primary key约束的列not null，并且不允许重复 u2022实例7: u2022truncate table t; u2022Table truncated u2022// u2022alter table t add constraint t_pk primary key(c1,c2); u2022Table altered u2022// u2022insert into t(c1,c2,c3,c4) u2022values(1,to_date("2011-01-01","yyyy-mm-dd"),"csdn",10); u20221 row inserted u2022// u2022insert into t(c3,c4) u2022values("china",1); u2022ORA-01400: cannot insert NULL into ("SCOTT"."T"."C1") u2022// u2022insert into t(c1,c2,c3,c4) u2022values(1,to_date("2011-01-01","yyyy-mm-dd"),"csdn",10); u2022ORA-00001: unique constraint (SCOTT.T_PK) violated u2022这里，我们看到primary key t_pk变成了unique约束，证明了主键约束也是唯一约束。

primary key=unique key+not null1楼正解！

每个表可以有多个 UNIQUE 约束，但是每个表只能有一个 PRIMARY KEY 约束。[知识拓展]主键：PRIMARY KEY约束唯一标识数据库表中的每条记录。主键必须包含唯一的值；主键列不能包含 NULL 值。每个表都应该有一个主键，并且每个表只能有一个主键。唯一：UNIQUE约束唯一标识数据库表中的每条记录。UNIQUE 和 PRIMARY KEY 约束均为列或列集合提供了唯一性的保证。PRIMARY KEY 约束拥有自动定义的 UNIQUE 约束。

　　嘿嘿 用一句顺口的话来说　　区别就是一个表只能定义一个primary key，但可以定义多个unique key，primary key 必须不空不重(chong)，unique key 不空，但可以允许有一个空值。

组合主键呀....如果 PRIMARY KEY 约束定义在不止一列上，则一列中的值可以重复，但 PRIMARY KEY 约束定义中的所有列的组合的值必须唯一。 titleauthor 包含 au_id 和 title_id 两列这两列做为组合主键..titleauthor 表中,可以有au_id重覆...就是说可以有一种情况是,一个作者对应多本不同的书,另一种情况是,同一本书有不同的作者...

oracleprimary不会影响normal。primarykey（主键）和normal并没有直接的关系，也就是说primarykey并不会直接影响到normal。

primary key和unique key都是oracle中的约束类型。primary key，要求列值必须是唯一的，并且不能是nullunique key，同样要求列支必须是唯一的，但是可以为null他们两个在创建表的时候，都会自动添加唯一索引。不需要手工创建。

一个表只能有一个primarykey约束，但是primarykey可以有多个，由多个primarykey组成的主键约束叫做复合primarykey约束，这个在做主从表结构的时候从表经常会用到多个primarykey。

在数据库中是主键的意思。

改数据··现在插入的数据在表里存在

转：u2022primary key与unique key都是唯一性约束。但二者有很大的区别： u20221.作为primary key的1个或多个列必须为NOT NULL， u2022 如果建表时此列设为NULL，在增加PRIMARY KEY时，列自动更改为NOT NULL。 u2022 而unique key约束的列可以为null，这是primary key与unique key最大的区别。 u20222.一个表只能有一个primary key(单列或多列，多列主键叫联合主键)，但可以有多个unique key。 u2022实例1: u2022create table t(c1 number(2),c2 date,c3 varchar2(5),c4 int); u2022desc t; u2022Name Type Nullable Default Comments u2022---- ----------- -------- ------- -------- u2022C1 NUMBER(2) Y u2022C2 DATE Y u2022C3 VARCHAR2(5) Y u2022C4 INTEGER Y u2022// u2022实例2:添加primary key u2022alter table t add constraint t_pk primary key(c1,c2); u2022desc t; u2022Name Type Nullable Default Comments u2022---- ----------- -------- ------- -------- u2022C1 NUMBER(2) u2022C2 DATE u2022C3 VARCHAR2(5) Y u2022C4 INTEGER Y u2022我们看到，将c1，c2列设为联合主键后，他们变为not null； u2022如果在建表时就指定了主键的话，主键列将会默认为not null。 u2022// u2022如果我们在添加一个primary key，那么我们将会得到一个错误： u2022alter table t add constraint t_pk_2 primary key(c3,c4) u2022ORA-02260: table can have only one primary key u2022// u2022实例3:添加unique key u2022alter table t add constraint unique_key_t unique(c3,c4); u2022实例4:添加数据 u2022insert into t(c1,c2,c3,c4) u2022values(10,sysdate,"abc",3); u20221 row inserted u2022// u2022insert into t(c1,c2,c3,c4) u2022values(11,sysdate,"abc",3); u2022ORA-00001: unique constraint (SCOTT.UNIQUE_KEY_T) violated u2022我们看到，添加的第二条数据违反了刚刚创建的唯一键约束; u2022将unique_key_t删除，添加就能成功了。 u2022实例5:删除unique key u2022alter table t drop constraint unique_key_t; u2022insert into t(c1,c2,c3,c4) u2022values(11,sysdate,"abc",3); u20221 row inserted u2022// u2022实例6:删除primary key u2022alter table t drop constraint t_pk; u2022Table altered u2022// u2022desc t; u2022Name Type Nullable Default Comments u2022---- ----------- -------- ------- -------- u2022C1 NUMBER(2) Y u2022C2 DATE Y u2022C3 VARCHAR2(5) Y u2022C4 INTEGER Y u2022删除主键约束后，c1，c2列由恢复了原来的默认值null。 u2022// u20223.其实primary key也是unique key，被primary key约束的列not null，并且不允许重复 u2022实例7: u2022truncate table t; u2022Table truncated u2022// u2022alter table t add constraint t_pk primary key(c1,c2); u2022Table altered u2022// u2022insert into t(c1,c2,c3,c4) u2022values(1,to_date("2011-01-01","yyyy-mm-dd"),"csdn",10); u20221 row inserted u2022// u2022insert into t(c3,c4) u2022values("china",1); u2022ORA-01400: cannot insert NULL into ("SCOTT"."T"."C1") u2022// u2022insert into t(c1,c2,c3,c4) u2022values(1,to_date("2011-01-01","yyyy-mm-dd"),"csdn",10); u2022ORA-00001: unique constraint (SCOTT.T_PK) violated u2022这里，我们看到primary key t_pk变成了unique约束，证明了主键约束也是唯一约束。

PRIMARY KEY (`id`) USING BTREE,指定id列为主键，使用B树作为索引。

unique Key是唯一键，而Primary key是主键Primary key 与Unique Key都是唯一性约束。但二者有很大的区别： 1、Primary key的1个或多个列 必须为NOT NULL，如果列为NULL，在增加PRIMARY KEY时，列自动更改为NOT NULL。而UNIQUE KEY 对列没有此要求。 2、一个表只能有一个PRIMARY KEY，但可以有多个UNIQUE KEY。

Primary key 与Unique Key都是唯一性约束。但二者有很大的区别：1、Primary key的1个或多个列必须为NOT NULL，如果列为NULL，在增加PRIMARY KEY时，列自动更改为NOT NULL。而UNIQUE KEY 对列没有此要求。2、一个表只能有一个PRIMARY KEY，但可以有多个UNIQUE KEY。