既然是原頂外延，就不可能是high ceiling。

來源: 房崇於 2017-08-17 21:02:49 [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.