名词短语
中文翻译：煤炭样本分部
同义词：
['coal division', 'coal section', 'coal subdivision']
例句：
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1. The coal division is responsible for the mining and processing of coal.
煤炭分部负责煤炭的开采和加工。
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2.The coal division has been working on improving its efficiency.
煤炭分部一直在努力提高其效率。
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3.The coal division is expected to produce more coal in the coming years.
预计煤炭分部在未来几年将生产更多的煤炭。