中國生產的煤大多為劣質動力煤，雜質含量高，適合發電。以前大多數城市裏的空氣都有一股硫磺味兒

來源: shopman 於 2025-09-12 07:16:37 [舊帖] [給我悄悄話] 本文已被閱讀：次

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