這個視頻最早是在PBS台看到的

來源: Glider 於 2010-06-03 12:07:54 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

沒時間的同學可以直接拉到 1：50 play

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