老是在想一個問題，為什麽北極沒有企鵝？

來源: 美國嚴教授於 2015-02-01 17:36:13 [博客] [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.