开挖隧道 meaning in Chinese
tunnel work
tunneling
tunnelling
Examples
- Compressed air tunnelling method
压缩空气开挖隧道法 - No young person shall be employed to work underground in any mine or quarry or in any industrial undertaking involving a tunnelling operation
任何人不得雇用青年在矿场或石矿场进行地底工作，亦不得在工业经营内担任涉及开挖隧道的工作。