pollution

/pəˈluʃən/

undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities

中文释义：污染

Air pollution in major cities has reached alarming levels, causing respiratory diseases.

主要城市的空气污染已达到令人担忧的水平，导致呼吸系统疾病。

The government introduced stricter regulations to reduce water pollution from factories.

政府出台了更严格的法规以减少工厂造成的水污染。