看来口罩的确有效，而且棉纱口罩戴着没有太不舒服。可惜上班不好意思戴口罩。

来源: viewfinder 于 2020-01-20 19:18:22 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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