thx! "the earth rotates on its axis while it revolves in its orb

来源: 走马读人 于 2014-06-04 05:23:18 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (22 bytes)
回答: 先懂後接，而非不懂硬接 由 走马读人 于 2014-06-03 14:06:01

is hard to comprehend.

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