2 a railway system in which electric trains travel through tunnels below ground:
the London Underground
They went on the underground.
3 people in a society who are trying new and often shocking or illegal ways of living or forms of art:
5 The underground is an organization that secretly works against those in power:
He suffers from claustrophobia so he never travels on underground trains.
Ten miners were trapped underground when the roof of the tunnel fell in.
Planes bombed the guerrilla positions yesterday in an attempt to flush out snipers from underground tunnels.
His grandfather had bought the land as an investment, guessing that there might be gold underground.
We want to find practical solutions to the underground's problems, and to modernise its key assets such as track, signalling, bridges and embankments.
Despite the best efforts of its management and workers, the underground's quality of service is below that which passengers can reasonably expect.
The smaller lines could sometimes be undergrounded with advantage.
中文繁体
在地面以下, 在地下(的),在地面以下的, 人…
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在地面以下, 在地下(的),在地面以下的, 人…
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subterráneo, bajo tierra, metro…
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subterrâneo, embaixo da terra, metrô…
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地下の, 地下鉄…
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yer altı, yer altında, gizli…
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souterrain/-e, sous (la) terre, souterrain…
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subterrani, sota terra, metro…
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