n.煤烟,烟灰;油烟;
例句:
As a result, soot built up in their lungs.
于是黑灰就堆积在肺里.
Mainly in soot, emissions, noise sources such as governance.
主要从事油烟, 废气 、 噪声等污染源的治理.
A miner whose face was caked with soot.
一个脸布满灰的矿工.