The same applies for toxic pollution.
对于有毒物质污染穷人也是最脆弱的群体。
View a slide show of the world's worst toxic pollution problems
请看世界最严重有毒污染问题的图片说明
Air pollution on underground trains tend to be less toxic than that at street level.
地铁里的空气污染应该比街道的毒性弱。
Air pollution on underground trains tend to be less toxic than that at street level.
地铁里的空气污染应该比街道的毒性弱。
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