n.[C]

1. 隧道，地道
   The railroad passes under the mountain through a tunnel.

   鐵路穿過隧道從山下通過。

2. （礦場的）坑道，石巷
3. （動物的）洞穴
4. 地溝，涵洞

vt.

1. 在……挖掘隧道
   The workers are tunneling the hill.

   工人們在鑿山開隧道。

2. 挖，鑿（地道，洞穴等）
   A mole tunneled a hole under the wall.

   鼴鼠在牆腳下面鑽了一個洞。

3. 在……打開通道；打開（通道）

vi.

1. 挖掘隧道
   They were tunneling under the river.

   他們在河下挖掘隧道。

2. 打開通道[（+through）]
   The workers were tunnelling through solid rock.

   工人們正在堅石中挖掘一條通道。

3. 【物】隧穿

n.

1. an artificial underground passage, as built through a hill or under a building or by a burrowing animal.
2. a polytunnel.

v.

1. dig or force a passage underground or through something.
2. Physics  (of a particle) pass through a potential barrier.

[名]

1. 隧道。
   해저 터널.

   海底隧道。