想過沒有？

來源: NaCl 於 2010-08-10 07:23:32 [舊帖] [給我悄悄話] 本文已被閱讀：次

彩虹為什麽總是凸拱形的？

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