Commutative property

回答: The equation stands, hahaLily1682014-09-08 11:05:21

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not very scientific. -tantema- 给 tantema 发送悄悄话 tantema 的博客首页 (0 bytes) () 09/08/2014 postreply 11:46:39

The mystery and biology of love can't be explained 100% by scien -Lily168- 给 Lily168 发送悄悄话 Lily168 的博客首页 (4 bytes) () 09/08/2014 postreply 15:19:23

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