谢谢文青贴的视频。同爱TED，开阔眼界。

来源: 好学又好问于 2011-10-04 09:31:30 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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