water pollution 水污染
air pollution 空气污染
soil contamination 土壤污染
defame 诽谤
despite 不顾（注意区分）
1. The factory waste befouls the river.
工厂废料污染了这条河流。
2. He tried to befoul his opponent's reputation.
他试图诋毁对手的名誉。
3. The mud from the construction site befouls the main road.
建筑工地的泥浆弄脏了主干道。
4. It is wrong to befoul the truth with lies.
用谎言玷污真相是错误的。
A: The new dump site is befouls the local environment.
A：新的垃圾填埋场正在污染当地环境。
B: Yes, the smell is unbearable and it befouls the air quality.
B：是的，气味难闻，而且污染了空气质量。
1) 弄脏，使变脏
2) 玷污，损害（名誉、名声等）
3) 诽谤，中伤
1. 弄脏；玷污
e.g.
The oil spill befouled the beaches.
石油泄漏弄脏了海滩。
2. 诽谤；损害（声誉）
e.g.
Don't let his rumors befoul your good name.
别让他的谣言损害你的好名声。
verb
1. To make dirty or unclean; to pollute.
2. To damage the reputation of someone or something; to defame.
Synonym: pollute, defile, tarnish, slander