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2013-05-23 12:21
求翻译：Space shuttles(太空梭) go back and forth between Earth and space. The first one flew on April 12, 1982. a space shuttle has four main parts. They are the orbiter, the fuel tank, and two rocket boosters.是什么意思？ 待解决
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Space shuttles(太空梭) go back and forth between Earth and space. The first one flew on April 12, 1982. a space shuttle has four main parts. They are the orbiter, the fuel tank, and two rocket boosters.
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