- 释义：
- n. 黑烟灰，油烟
- 例句：
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Soot is the product of the imperfect combustion of fuel.
煤烟是燃料不完全燃烧的产物.
换一句
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Soot is usually the product of the imperfect combustion of fuel.
煤烟通常是燃料不完全燃烧的产物.
换一句
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The inside of a chimney soon gets covered in soot.
烟囱里面很快就覆盖了一层煤烟.
换一句