名词
中文翻译：钻孔机
同义词：
['drill', 'drilling']
例句：
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1.The engineer used a drill to make the hole in the wall.
工程师用钻头在墙上打了一个洞。
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2. The drill operator carefully controlled the speed of the drill.
钻机操作员小心地控制着钻的速度。
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3.The drill bit was worn out after several hours of use.
几小时的使用后，钻头磨损了。