极高极低都不好，这是费话。混饭吃的研究。

来源: lanxf126 于 2017-10-18 11:11:38 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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极高极低都不好，这是费话。 混饭吃的研究。