1·Man has been polluting the earth.
人类一直在污染地球。
2·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。
3·We are not about to go back to the days when Congress openly worried about inferior races polluting America's bloodstream.
我们不会回到国会公开担心劣等种族污染美国血液的时代。
4·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。
5·We need progressive policies that shape collective action (and rein in polluting businesses), alongside engaged citizens pushing for change.
我们需要先进的政策来打造集体行动（并遏制污染企业），同时需要参与其中的公民推动变革。