就算在加州，冬天窗子也開得少，偶而有人來我就開著空調扇，讓MERV13 filter濾掉一些可能存在的病毒。

來源: 周老大於 2022-12-28 08:23:35 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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