對了，樓下數據分析有句話很有用：無論何種對策，要以回報率的高低去衡量。

來源: 多哥於 2014-05-26 11:56:04 [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.