5-6個是個不錯的數字。能管得過來，也有足夠的economy of scale 。

來源: julie116 於 2025-01-23 21:53:23 [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.