名词
中文翻译：煤
同义词：
['coal', 'bituminous coal', 'lignite']
例句：
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1. The mine is located in the heart of the coal-mining region.
这个矿位于煤矿区的中心。
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2. Coal mining has been a major industry in this region for centuries.
煤炭开采是这个地区几个世纪以来的主要产业。
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3. The umber color of the wood adds a warm and earthy touch to the room.
木头的深褐色给房间增添了温暖和土气的感觉。