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苍蝇为啥难打？ 因为走位中运用了高等数学 - 科学探索 - cnBeta.COM
source link: https://www.cnbeta.com/articles/science/1023539.htm
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夏天在外边吃饭的时候，苍蝇经常会不请自来。打苍蝇是件技术活，因为苍蝇的飞行轨迹十分诡异，人类只靠双手很难找到准头。所以问题来了，苍蝇为什么这么难打呢？
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