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Astronauts at the International Space Station have overcome initial fears and are preparing to perform the first spacewalk beneath the shuttle to repair two dangling pieces of material. The material, used to fill gaps between tiles, is sticking out b
一位外国同事很喜欢学习中文,就请Catherine来叫他。Catherine花了大量时间来教这位朋友,于是不久,这位老外已经能进行很多日常会话了。他很感谢Catherine对他的帮助,握着Catherine的手说:I
Non-urgent repairs 非紧急维修 A:What do you do if you find something that isn't on your list? A:如果你发现问题不在你们服务范围表中,你怎么做? B:It depends what it is. Once we have disconnected the unit, we do as many jobs
By Margaret Besheer Washington 03 November 2007 NASA astronauts have successfully repaired a damaged solar wing at the International Space Station. The operation was completed Saturday, after being postponed twice so engineers could further study how
The Parts of Metabolism 新陈代谢到底是什么? What is metabolism really? Statements like he can eat a lot because he has a fast metabolism are somewhat misleading. Metabolism isnt about the digestion of food in your stomach; its the name giv