名词
中文翻译：煤炭的母体
同义词：
['coal mother', 'coal parent例句：1. The coal mine is located in the northern part of the country.（煤矿位于该国北部。）2. The coal industry has been a major contributor to the economy.（煤炭产业一直是经济的主要贡献者。）']
例句：
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1. The coal mine is located in the northern part of the country.
煤矿位于该国北部。
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2. The coal industry has been a major contributor to the economy.
煤炭产业一直是经济的主要贡献者。
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3.The coal mine was closed due to safety concerns.
由于安全担忧，煤矿已关闭。