也有這方麵的原因。但汙染是工業化過程中不可避免地副作用。看看西方主要工業國，哪個曾經沒有汙染？

來源: 衡山老道於 2020-05-04 17:16:50 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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