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a passage built underground, for example to allow a road or railway to go through a hill, under a river, etc. 地下通道；地道；隧道 a railway/railroad tunnel 铁路隧道 the Channel Tunnel 英吉利海峡隧道 the tunnel entrance/walls/ceiling 隧道入口/墙壁/天花板 They have been digging underground tunnels in the mountains since the 1960s. 自20世纪60年代以来，他们一直在山里挖掘地下隧道。 A gust of wind passed through the tunnel. 一阵风穿过隧道。
Extra ExamplesTopics Transport by bus and trainb2, Transport by car or lorryb2A service tunnel runs between the two buildings. 两座大楼之间有一条服务隧道。 The initial section of tunnel had to be dug by hand. 隧道的起始部份不得不用人工挖掘。 The train disappeared into a tunnel. 火车消失在隧道中。 They've built a new tunnel through the mountain. 他们修了一条新的穿山隧道。 We got lost in the maze of tunnels. 我们在迷宫般的隧道内迷路了。
Oxford Collocations Dictionaryadjective- long
- short
- narrow
- …
- go through
- use
- disappear into
- …
- run
- lead
- connect
- …
- entrance
- floor
- mouth
- …
- through a/the tunnel
- a labyrinth of tunnels
- a maze of tunnels
- a network of tunnels
- …
an underground passage made by an animal or natural processes （动物的）洞穴通道 The badger sett had twelve entrances to what must have been a labyrinth of tunnels. 这个獾穴有 12 个入口，内部必是迷宫般的地道。 The tunnel opened out into a large cavern. 隧道通往一处大洞穴。
Oxford Collocations Dictionaryadjective- long
- short
- narrow
- …
- go through
- use
- disappear into
- …
- run
- lead
- connect
- …
- entrance
- floor
- mouth
- …
- through a/the tunnel
- a labyrinth of tunnels
- a maze of tunnels
- a network of tunnels
- …
Word Originlate Middle English (in the senses ‘tunnel-shaped net’ and ‘flue of a chimney’): from Old French tonel, diminutive of tonne ‘cask’. The current noun senses date from the mid 18th cent.
Idioms
light at the end of the tunnel
something that shows you are nearly at the end of a long and difficult time or situation 快要熬出头了；曙光在即 For the first time since the start of his treatment, we can now see light at the end of the tunnel. 自从他的治疗开始以来，我们现在第一次看到了一线希望。