Word: 淤泥 (yūní) 淤泥 dictionary entry yūní silt; sludge; ooze Full dictionary entry for 淤泥 Example sentences using 淤泥 2 sentences, showing page 1 of 1. 下水道里堵满了黑色的淤泥。 Xiàshuǐdào lǐ dǔ mǎnle hēisè de yūní. The drain is clogged with black sludge. 河底有一层厚厚的淤泥。 Hédǐ yǒu yìcéng hòuhòu de yūní. There is a thick layer of silt on the riverbed.