名词
中文翻译：煤
同义词：
['coal', 'bituminous coal', 'anthracite coal']
例句：
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1. Themine produces a significant amount of coal every year.
这个矿每年生产大量的煤。
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2. Coal is widely used as a source of energy in many industries.
煤在许多工业中广泛用作能源来源。
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3. Due to the depletion of natural resources, the production of coal is decreasing.
由于自然资源的枯竭，煤炭的产量正在减少。