名词
中文翻译：地下挖掘
同义词：
['subsurface mining', 'tunneling', 'excavation例句：1. The engineers are conducting an underground excavation to repair the damaged pipeline.（工程师们正在进行地下挖掘以修复受损的管道。）']
例句：
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1. The engineers are conducting an underground excavation to repair the damaged pipeline.
工程师们正在进行地下挖掘以修复受损的管道。
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2. The construction company is planning to undertake an underground excavation project in the next quarter.
建筑公司计划在下一季度开始一个地下挖掘项目。
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3.The team successfully completed the underground excavation and discovered a valuable mineral deposit.
团队成功地完成了地下挖掘，并发现了一个有价值的矿物矿床。