He has seen the pristine river of his childhood become polluted and fish populations disappear.
他亲历了儿童时代的河流一步步被污染，鱼类一点点的消失。
2
He said that environmental personnel who visited the disaster areas found that the three rivers are highly polluted by dead fish, and he warned locals not to use those waters.
他说考察过灾区的环保人员发现，这三条河都已经被死鱼严重污染。他还呼吁当地居民不要使用那些河水。
3
Polluted water kills fish and other Marine life. Pollution of soil reduces the amount of land available for growing food.