主题: Who impact the earth the most?
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旧 Oct 18th, 2012, 18:28     #59
beauty_cat
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作者: Bylaw 查看帖子
这个就不用操心了，物理学应该很容易计算出来月球的质量。空心还是实心，算一下就有了。
你这人没劲，不跟你侃了～～

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