n.隧道；地道；洞穴

v.挖地道；挖隧道

The heavy traffic crawled through the narrow tunnel. 擁擠的車輛慢吞吞地穿過狹窄的隧道。

The kid dug a tunnel in the sand. 小孩在沙堆里挖了一個地道。

Moles make underground tunnels. 鼴鼠常打地洞。

The engineers had to tunnel through solid rock. 工程師須要在堅實的巖石中開鑿隧道。

Sometimes the snow was so deep we could tunnel through it. 偶爾雪會積到可以造隧道那般的深度。