你這個是指信息的時效性，如果是食品的時效性則應該是什麽時候能吃，什麽時候最好吃，等。。

來源: 狗肉於 2010-11-29 10:40:30 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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