当然，疫苗+口罩和社交距离防护效果会更好。

来源: pickshell 于 2021-08-17 18:50:56 [旧帖] [给我悄悄话] 本文已被阅读：次

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当然，疫苗+口罩和社交距离 防护效果会更好。