不能用寫蹦床的心情來寫科普文章哈：-）。

來源: betadine 於 2015-08-16 09:50:17 [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.