煤烟的例句（煤烟在句子中的用法）

• The inside of a chimney soon gets covered in soot. 烟囱里面很快就覆盖了一层煤烟。
• 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.
• Soot is the product of the imperfect combustion of fuel. 煤烟是燃料不完全燃烧的产物.
• ... a wall blackened by soot. 被煤烟熏黑的墙壁