单词 | tunnel |
释义 | tunnel1 of 2noun tun·nel ˈtə-nᵊl 1 a : a covered passageway specifically : a horizontal passageway through or under an obstruction b : a subterranean gallery (as in a mine) c : burrow 2 : a hollow conduit or recess : tube, well tunnellike ˈtə-nᵊl-ˌ(l)īk adjective tunnel 2 of 2verb tunneled or tunnelled; tunneling or tunnelling ˈtən-liŋ ˈtə-nᵊl-iŋ intransitive verb 1 : to make or use a tunnel 2 physics : to pass through a potential barrier electrons tunneling through an insulator between semiconductors transitive verb : to make a tunnel or similar opening through or under also : to make (one's way) by or as if by making a tunnel tunneler ˈtən-lər noun ˈtə-nᵊl-ər tunnel nounas in cave a passage that goes under the ground, through a hill, etc. The train goes through a tunnel in the mountain. The moles dug tunnels in the yard. Synonyms & Similar Words Relevance
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