Later, engineers managed to construct railways in a system of deep tunnels, which became known to the tube.

之后，工程师们设法在深邃道系统中修建铁路，成为地铁。

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The technique of precise engineering surveying for high-speed railways is one of the key techniques to construct high-speed railways successfully.

高速铁路精密工程测量技术是高速铁路成功建设的关键技术之一。

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In January 1994 the then Transport Secretary, John MacGregor, told MPs that Union Railways - the company set up to construct the Channel Tunnel link - had concluded that "St Pancras is preferable to King's Cross as the terminus on environmental, operational and commercial grounds".

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