謝謝說明，對我有用。我坐美國飛機戴醫用口罩加N95，靜止時呼吸尚可，走路就堵氣了。

來源: 壁上觀於 2021-12-08 10:30:35 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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