你這論點的確費解。為啥建了地鐵必然造成交通擁堵和空氣汙染呢？建地鐵不是因為交通擁堵嗎？

來源: 為人父於 2015-03-01 18:47:40 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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