Therefore throw to add trace element to match well and store mud pool, so the problem of sludge bulking is solved.

为此，采取了向配水井、贮泥池内投加微量元素混合液的措施，从而解决了污泥膨胀的问题。

youdao

A pool of mud boils near Dallol Volcano, in Ethiopia's remote Danakil Depression.

一池泥浆在位于埃塞俄比亚远郊达纳基尔凹地(Danakil Depression)的宽干谷(Dallol)火山附近沸腾着。

youdao

Bobo Simbo stands thigh-high in a pool of orange water, sifting the mud for traces of gold dust.

VOA: standard.2010.04.22