单词	tunnel
释义	noun | verb tunneltunnel1 /ˈtʌnl/ ●●● W3 noun [countable] Etymology ETYMOLOGYtunnel1 Origin: 1400-1500 Old French tonel barrel, from tonne, from Medieval Latin tunna 1 a passage that has been dug under the ground, through a mountain, etc. for people, cars, or trains to go through2a passage under the ground that animals have dug to live in [Origin: 1400–1500 Old French tonel barrel, from tonne, from Medieval Latin tunna] noun | verb tunneltunnel2 verb [intransitive always + adv./prep., transitive] Verb Table VERB TABLE tunnel Simple Form Present I, you, we, they tunnel he, she, it tunnels Past I, you, he, she, it, we, they tunneled Present perfect I, you, we, they have tunneled he, she, it has tunneled Past perfect I, you, he, she, it, we, they had tunneled Future I, you, he, she, it, we, they will tunnel Future perfect I, you, he, she, it, we, they will have tunneled Continuous Form Present I am tunneling he, she, it is tunneling you, we, they are tunneling Past I, he, she, it was tunneling you, we, they were tunneling Present perfect I, you, we, they have been tunneling he, she, it has been tunneling Past perfect I, you, he, she, it, we, they had been tunneling Future I, you, he, she, it, we, they will be tunneling Future perfect I, you, he, she, it, we, they will have been tunneling 1to dig a long passage under the ground: tunnel under/through etc. something Rescuers tunneled toward the men trapped in the mine.2if insects or animals tunnel into something, they make holes in it: tunnel through/into etc. something The grubs tunnel into the wood.
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