名词
中文翻译：煤层
同义词：
['coal seam', 'coal bed例句：1. The coal mine is located in the southern part of the country.（煤矿位于该国南部。）2. The coal mine has been producing coal for over a century.（煤矿已经生产煤炭超过一个世纪了。）']
例句：
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1. The coal mine is located in the southern part of the country.
煤矿位于该国南部。
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2. The coal mine has been producing coal for over a century.
煤矿已经生产煤炭超过一个世纪了。
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3.The coal mine is a major source of energy for the region.
煤矿是该地区的主要能源来源。