The polluter of the river is the chemical plant upstream.

这条河的污染者是上游的化工厂。

It has been identified that the polluter in this area is sulfide.

经鉴定，该地区的污染物是硫化物。

The pollution problem can be solved only by containing the polluter.

只有遏制污染源才能解决污染问题。

Have you heard about "polluter pays principle"?

您是否听说过“污者自付计划”？

The polluter should pay.

污染者应该承担污染的代价。

China is the world's biggest polluter.

中国是世界最大的污染排放国。

Goodbye from the world's biggest polluter.

世界上最大的污染源跟您说再见了！

The steel mill is the city's major polluter.

这个钢厂是这个城市主要的污染者。