Noun + 污染
The noun 污染 (wūrǎn) means "pollution" or "contamination" and can also function as a verb meaning "to pollute." It is widely used in environmental discussions. For example, 碳污染 means "carbon pollution" and 空气污染 means "air pollution."
工厂排放的废水造成了严重的水污染。
Gōngchǎng páifàng de fèishuǐ zàochéng le yánzhòng de shuǐ wūrǎn.
The wastewater discharged by the factory has caused serious water pollution.
城市里的空气污染越来越严重了。
Chéngshì lǐ de kōngqì wūrǎn yuè lái yuè yánzhòng le.
Air pollution in the city is getting more and more serious.
我们每个人都应该为减少污染做出努力。
Wǒmen měi gè rén dōu yīnggāi wèi jiǎnshǎo wūrǎn zuòchū nǔlì.
Every one of us should make an effort to reduce pollution.