病人戴，防飛沫；如果病人不戴呢？醫護戴，接觸病人多。要是病人多起來呢？見仁見智，自己想去吧。

來源: 周老大於 2020-02-02 12:29:23 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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