"Pollution" 是一个可数名词，表示环境污染。它来自拉丁语“polluere”，意思是“污染”。
例句：
Air pollution is a serious problem in many major cities. (空气污染是许多大城市的严重问题。)
The pollution of the river has made it unsafe for swimming. (河流的污染使得游泳不安全。)
The factory's pollution of the groundwater has caused health problems for local residents. (工厂对地下水的污染导致了当地居民的健康问题。)