坑道

例句：

1. 1. The miners were forced to tunnelthrough the mountain.
   矿工们被迫穿过山体挖掘隧道。
2. 2. The engineers designed anew tunnel for the construction project.
   工程师为建设项目设计了一个新的隧道。
3. 3. Thetunnel was filled with dustand debris during the excavation process.
   在挖掘过程中，隧道充满了灰尘和碎片。