污泥

huó xìng wū ní shì fèi shuǐ chǔ lǐ fāng fǎ zhōng de yī zhǒng

活性污泥是废水处理方法中的一种。

Activated sludge is one of the wastewater treatment methods.

mǎn shì wū ní

满是污泥

full of sludge

qì chē yǐ jīng xiàn rù wū ní zhōng le

汽车已经陷入污泥中了。

The car had sunk into the mud.

mén kǒu de xiǎo yuàn zhōng yāng yǒu kē lǎo fēng shù cǎo píng tū rú là lì tóu shàng miàn mǎn shì wū ní hé luò zhī

门口的小院中央有棵老枫树，草坪秃如瘌痢头，上面满是污泥和落枝。

A forlorn-looking maple tree stood in the center of a yard of patchy grass, mud, and twigs.

yuē hàn cā qù liǎn shang de wū ní

约翰擦去脸上的污泥。

John rubbed the mud off his face.