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最佳答案：What is my favorite invention? We knew there had been many inventions at the las
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最佳答案：时间机器I will invent a time machine in the as it 's been my dream in my life. Time
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最佳答案：The sport originated in the United States,and is now just achieving the type of
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最佳答案：因此,未来我想发明一种非常非常小 只以纳米计的机器人,它能深入到人的每一个毛细血管中,就象疏通河道的挖掘机 推土机一样,去清理人的血管,它将血管及血管壁上的废物