蛋表面原本有层膜，不透气，细菌进不去。清洗去除了膜，细菌通过蛋皮上的微孔进到蛋内。外面好像干净了，里面赃了

来源: fuz 于 2017-10-10 18:39:11 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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