The construction of underground railways has eased traffic pressure on the ground.

地下铁道 的修建减轻了地面交通的压力。

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A general description on the traffic control automation system of Beijing underground railways is given in this paper.

本文概述北京地下铁道行车指挥自动化系统。

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As we face each other in omnibuses and underground railways we are looking into the mirror that accounts for the vagueness, the gleam of glassiness, in our eyes.

当我们面对面坐在公共汽车和地下铁道里的时候，我们就是在照镜子；这就说明为什么我们的眼神都那么呆滞而朦胧。

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Moscow's Metro is one of the most-used underground railways in the world, carrying about 5.5 million passengers a day.

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They also enjoy a continuing monopoly over construction and civil engineering projects, from dams to bridges, and highways to metropolitan underground light railways.

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If only the buses, underground systems and railways worked cheaply and efficiently, then motorists would leave their cars at home.

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