名词
中文翻译：Unknown
同义词：
['drill', 'chisel', 'auger']
例句：
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1. He used a pit saw to carve out a niche in the wall.
他用凿子在墙上凿出一个凹槽。
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2. The engineer needed a pit saw to make the necessary holes for the pipes.
工程师需要凿子来为管道制作必要的孔洞。
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3. The miners used pit saws to break through the rock and reach the gold.
矿工们使用凿子来打破岩石并到达黄金。