foul the air
collocation污染空气
The factory fumes fouled the air over the town.
工厂的废气污染了城镇上方的空气。
犯规；对...犯规
先理解核心含义，再看它在真实句子里的用法。
犯规；对...犯规
To commit a foul, especially by illegally contacting an opponent in a sport.
The defender fouled the forward during the last minute.
后卫在最后一分钟对前锋犯规。
体育比赛
弄脏
To make dirty.
玷污
To besmirch.
击出界外球
hit a foul ball
阻碍、堵塞或以其他方式干扰(某物),例如通过堵塞(排水管、枪管、烟囱等)或挡住(枪击等)
To obstruct, block, or otherwise interfere with (something), for example by clogging (a drain, gun barrel, chimney, etc) or by being in the way of (a gunshot, etc).
foul
Base
原形
fouls
3rd person
第三人称单数
fouling
-ing
现在分词
fouled
Past
过去式
fouled
Past participle
过去分词
He fouls often during games.
他比赛中经常犯规。
She fouled the defender yesterday.
她昨天对防守队员犯规。
They have fouled three times.
他们已经犯规三次。
foul 作为动词，意为‘犯规’，规则变化。
If you foul another player, the referee will blow the whistle.
如果你对另一名球员犯规，裁判会吹哨。
He was penalized for fouling the opposing player.
他因对对方球员犯规而受到处罚。
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污染空气
The factory fumes fouled the air over the town.
工厂的废气污染了城镇上方的空气。
堵塞排水管
Leaves fouled the drain, causing water to back up.
树叶堵塞了排水管，导致水倒流。
对对手犯规
He was sent off for fouling an opponent in the box.
他因在禁区内对对手犯规而被罚下。
缠住螺旋桨
Fishing nets fouled the propeller, stopping the boat.
渔网缠住了螺旋桨，使船停了下来。
搞糟；弄乱
The bad weather fouled up our travel plans.
坏天气打乱了我们的出行计划。
犯罪行为；犯规行为
The police are investigating the possibility of foul play.
警方正在调查是否存在犯罪行为的可能性。
自毁家门；损害自身利益
By lying to his biggest client, he fouled his own nest.
他对最大的客户撒谎，结果损害了自己的利益。
坏鸟才会弄脏自己的窝。
This old English proverb says that someone who harms their own family or community is behaving badly. Here the word 'foul' means 'to make dirty' or 'to besmirch'.
这句古老的英语谚语意思是，一个人伤害自己的家人或社区是恶劣的行为。这里的 foul 意为“弄脏”或“玷污”。
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Revisit a common error or keep this word in your review list.
记 foul 音似‘发呕’：想象球员犯规倒地，满身泥污弄脏球衣，臭味让人发呕。
语域：mixed 常见场景：体育比赛、日常生活、书面/正式语境 foul 作动词时，体育比赛中“犯规、击出界外球”和日常“弄脏、堵塞”都比较常见；正式或文学性的“玷污、污染”多用于书面表达。实际使用时通常要根据搭配和语境来选择合适的意思。
常用于体育比赛中表示犯规
Dictionary facts from AI_FALLBACK, DICTIONARY_API_DEV, ECDICT, WIKTIONARY.