underground tunnel

• 地下隧道

underground tunnel的用法和样例：

例句

1. The prisoner escaped by digging an underground tunnel.
   囚犯挖了一条地道逃跑了。
2. An underground tunnel or passageway, as in a cave or one dug for military or mining purposes.
   隧道，地道地下隧道或通道，如在洞穴内的或为军用、采矿而挖掘的地道