名词
中文翻译：受控的矿井
同义词：
['controlled mine', 'controlled tunnel']
例句：
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1.The mine was heavily guarded by the police.
这个矿井被警方严密看守。
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2.The mine is a dangerous place to work.
这个矿井是一个危险的工作场所。
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3. He had been working in the controlled mine for many years.
他已在受控矿井中工作多年了。