防飛沫就防一次性大量吸入病毒。一次性吸入一億個病毒和吸入一萬個，有區別的。

來源: Phoenix16 於 2023-02-07 09:14:47 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.