名词
中文翻译：大洞
同义词：
['deep hole', 'deep well']
例句：
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1.The engineer drilled a large borehole to access the water source.
工程师钻了一个大洞来获取水源。
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2. The construction crew had to dig a large borehole to lay the new pipeline.
施工队不得不挖一个大洞来铺设新的管道。
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3.The geologist discovered a large borehole filled with minerals.
地质学家发现了一个充满矿物的大洞。