名词
中文翻译：倒置钻杆
同义词：
['inverted rod', 'inverted drill bit']
例句：
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1.The engineer used an inverted drill string to bore through the rock.
工程师使用倒置的钻杆钻穿了岩石。
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2.The inverted drill string was a crucial part of the construction process.
倒置的钻杆是施工过程中至关重要的一部分。
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3.The inverted drill string helped the workers to reach deeper into the earth.
倒置的钻杆帮助工人深入地下。