A tunnel is a long passage which has been made under the ground, usually through a hill or under the sea.
例句
...two new railway tunnels through the Alps.穿過阿爾卑斯山的兩條新的鐵路隧道…the motorway tunnels under the Hudson river.哈得孫河下的高速公路隧道
VERB
挖隧道;挖地道
To tunnel somewhere means to make a tunnel there.
例句
The rebels tunnelled out of a maximum security jail...叛亂者挖地道逃離了戒備最為森嚴(yán)的監(jiān)獄。The caterpillars tunnel into the fruit to grow and mature.毛蟲鉆入果實(shí)，并在其中生長(zhǎng)為成蟲。
英漢詞典釋義
n.
地下通道,隧道, 地道
The train passed through a tunnel.火車通過了一條隧道。
(動(dòng)物棲息的)穴,洞穴通道
A mouse dug a tunnel under the lawn.老鼠在草地下打了洞。
英英詞典釋義
Noun
1. a passageway through or under something, usually underground (especially one for trains or cars);
"the tunnel reduced congestion at that intersection"
2. a hole in the ground made by an animal for shelter