炉子里燃烧的木柴产生了大量的煤灰。
The burning firewood in the stove produced a lot of ___soot.
烟囱里的烟灰把厨房天花板都熏黑了。
The chimney ___sooted the kitchen ceiling, turning it black.
火车头排出的煤烟在车站建筑上留下了一层厚厚的污垢。
The locomotive left heavy ___soot on the station building from its smoke.
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