名词
中文翻译：煤炭洗选
同义词：
['clean coal', 'wash coal']
例句：
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1. The coal washing plant is locatedin the northwest of the city.
煤炭洗选厂位于该市西北部。
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2. Thecoal washing process helps to remove impurities from the coal.
煤炭洗选过程有助于从煤炭中去除杂质。
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3. The coalwashing technology has greatly improved the quality ofthe coal.
煤炭洗选技术大大提高了煤炭的质量。