名词
中文翻译：煤渣
同义词：
['coal ash', 'soot例句：1. The factory produces a lot of coal ash for the construction industry.（这家工厂为建筑业生产大量的煤渣。）']
例句：
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1. The factory produces a lot of coal ash for the construction industry.
这家工厂为建筑业生产大量的煤渣。
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2.The smoke from the chimney contains a lot of soot that needs to be cleaned up.
烟囱冒出的烟含有大量的烟灰，需要清理。
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3.The coal ash is used as a fertilizer in agriculture.
煤渣用作农业肥料。