When he was doing underground work he was arrested because a renegade informed against him.

他做地下工作时,曾因叛徒告密而被捕.

《现代汉英综合大词典》

Do you perform any underground work, including digging, excavation or tunneling?

您是否从事地面下的工作, 包括挖 、 掘或隧道工程?

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For effective underground work, the front must be strong, deep, long and cleanly muscled.

为了能有效的在地下工作, 前躯必须结实 、 深 、 肌肉整洁.

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Their experience of underground work helped them dig a hole and crawl toward the entrance.

井下工作的丰富经验,使得他们开始掘洞,向矿井的出口处爬行.

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They have fought militantly through the two periods of underground work and of open activity.

从秘密时期到公开时期,贫农都在那里积极奋斗.

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