城市车太多, 是其中原因之一. 还有SEMI工场, 化工厂等.
所有跟帖:
• Also, Most chinese industries are pollution based. -qtzhao- ♂ (0 bytes) () 12/08/2013 postreply 14:51:24
• Also, Most chinese industries are pollution based. -qtzhao- ♂ (0 bytes) () 12/08/2013 postreply 14:51:24