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最佳答案：Because of his commitment to space technology,until more than 40 years before th
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最佳答案：“竭力”:do one's best“现在正在维修”:be maintaining“实现一个孩子的梦想”:to realize a child's dream“
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最佳答案：Cell phone can be attached to our wrists.When we talk,we can clealy see others'
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最佳答案：There are 50 billion galaxies in the universe.There are eight planets in the sol
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最佳答案：This is the only narrow tomorrow,in fact,tomorrow is the only real future life.M
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最佳答案：1, the shuttle in space2, some new things3, free entry4, the summer (2)5, my lif
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最佳答案：过去分词作状语,用在与逻辑主语成被动关系的时候,而此句中,Seen from the space ,the earth is a blue planet.ear
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最佳答案：尤里·阿列克谢耶维奇·加加林(Yury Alekseyevich Gagarin)阿姆斯特朗 Lance Armstrong奥尔德林(Edwin B.Aldri
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最佳答案：The trouble is that he has never done the work.Looking into space from the earth
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最佳答案：If you are an astronaut my future,I will have a good body,so,I always want exerc