燒煤做飯，冬季燒煤取暖，大城市空汙，可能是原因之一。南人移居北方，很多人有鼻炎，哮喘或肺病。

來源: Shubin 於 2024-05-13 09:06:13 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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