名词
中文翻译：钻孔机
同义词：
['core drill', 'core boring machine']
例句：
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1. The engineer used a core drill to make holes in the concrete.
工程师使用钻头在混凝土中打孔。
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2. They needed a core drill to bore through the rock.
他们需要一台钻头来穿透岩石。
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3. The core drill was an essential tool for the construction crew.
钻头是建筑工人们必不可少的工具。