当然牛粪干净了，牛只吃草，人什么都吃啊。西藏人用牛粪擦碗，蒙古人用牛粪烧火，没人用人粪这么干。

来源: newnewid888 于 2021-03-15 21:56:37 [旧帖] [给我悄悄话] 本文已被阅读：次

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