名词
中文翻译：煤坑
同义词：
['coal pit', 'coal hole']
例句：
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1.The miners found a cinder hole filled with water and mud.
矿工们发现了一个充满水和泥巴的煤洞。
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2.The firefighters had to dig a cinder hole to put out the flames.
消防员不得不挖出一个煤洞来扑灭火焰。
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3. The children played in the cinder hole, unaware of the danger.
孩子们在煤洞里玩耍，没有意识到危险。