"多严重的污染，只要不继续排污，过三十年恐怕也自 然净化了" ?

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• 回复："多严重的污染，只要不继续排污，过三十年恐怕也自 然净化了" ????? -panlm_- ♀ (113 bytes) () 03/16/2013 postreply 13:14:41

• Heavy metal in soil will stay there for long time without expens -kybluegrass- ♂ (0 bytes) () 03/16/2013 postreply 13:33:45