tunnel bottom cleaning是什么意思


中文翻译卧底

网络释义

1)tunnel bottom cleaning,卧底2)floor coal,卧底煤3)floor-based quantity,卧底量4)Length of chain cable lied on seabed,卧底链长5)undercover investigation,卧底侦查6)underground criminal investigation,卧底侦查

用法例句

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