我是說，樓主概念不清，完全忽略了變速箱在其中起的作用。

來源: TBz 於 2013-09-12 16:53:16 [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.