Polluting factories have been moved or closed.

污染工厂已经被迁移或者关闭。

The new coffee-growing techniques are polluting the water locally.

新的咖啡种植技术正在污染当地的水质。

I think we should figure out some ways to stop people from polluting the river and call on them to fight against pollution.

我认为我们应该要想出一些办法来阻止人们污染这条河，并号召人们同污染做斗争。

We are polluting the water.

我们正在污染水资源。

We are polluting the air.

我们正在污染空气。