“救场”的英文怎么说?（动词）主持人救场 （“急智”的形容词也可以）比如歌手不来、摔倒、发生状况时的救场 还有，“莲花舌

英语翻译
putting out fires all over the place.
是说忙着到处救场的意思.就是说一大堆的麻烦事需要你处理.这边有个场,处理玩了又得赶到下一个地方去,还有一大堆的事情.然后你被烦死了.

谁会,救场!
现有碳酸钙和二氧化硅的混合物29g,在高温下使两者充分反应,放出气体,冷却后称重为20.2g,把反应生成物加如入适量水中,搅拌,再把水蒸干,称其质量为21.1g.问：
（1）标准状况下产生多少升气体?
（2）原混合物中碳酸钙的质量分数为多少?

在考场等，求救场，英语作文
Write a letter asking for amendments
to the following letter of credit by checking it with the given contract terms.
COMMERCIAL BANK OF THATTOWN
Date: May 15, 2006
To: Zhejiang Foodstuffs Import and
Export Corporation, Hangzhou, China
Advised through Bank of China,
Zhejiang
No. BOC2006/5/15
DOCUMENTARY LETTER OF CREDIT
IRREVOCABLE
Dear Sirs:
You are authorized to draw on Hong
Kong Food Company, Vancouver for a sum not exceeding
CAN$ 120 000(SAY CANADIAN DOLLARS
ONE HUNDERED AND TWENTY THOUSAND
ONLY) available by draft drawn on
them at sight accompanied by the following documents:
Full set of Clean on Board Bills of
Lading made out to order and blank endorsed, market
“Freight to collect” dated not later
than June 30, 2006 and notify accounted.
Signed Commercial Invoice in
quintuplicate.
Canadian Customs Invoice in
quintuplicate.
Insurance Policy (or Certificate) in
duplicate covering All Risks and War Risks,
Evidencing shipment from China port
to Montreal, Canada of the following goods:
50 000 tins of 430 grams of Mei Lin
Brand Strawberry Jam, at CAN $2.50 per tin CIFC3%
Vancouver, details as per your S/C
No. 2006/0317.
Partial shipments are allowed.
Transshipment is not allowed.
This credit expires on June 30, 2006
for negotiation in China.
…….
Sales Confirmation
No. 2006/0317
The Seller: Zhejiang Foodstuffs Import and Export
Corporation, Hangzhou, China
The Buyer: Hong Kong Food Company, Vancouver
Name of Commodity: Mei Lin Brand Strawberry Jam
Specifications: 340 grams per tin
Unit price & Terms: CAN $2.50 per tin CIFC3% Vancouver
Total Amount: CAN$ 125 000
Shipment: In June, 2006 from China port to Vancouver.
Partial
shipments and transshipment are
allowed
Payment: By 100% confirmed & irrevocable L/C to
be available by
sight draft, reaching the seller
30 days before the month of
shipment, remaining valid for
negotiation in China for
another 21 days after the
prescribed time of shipment.
Insurance: To be effected by the seller at 110% of
invoice value
covering WPA & War Risks as
per C.I.C.