地铁系统

underground railway───地铁

underground railroad───地下铁道

underground railroads───地下铁道

underground tunnel───地下隧道

underground garage───地下车库

underground movie───地下电影

underground movies───地下电影

undergo training───接受培训

underground combustion───地下燃烧

Panayiotou, he once played music on the London underground train system before forming Wham! With Andrew Ridgeley in 1981.───本名乔治奥斯·吉里亚科斯·帕纳约托，出名前曾在伦敦地铁里演唱，后于1981年和安德鲁·瑞吉里组成威猛乐队。

He also criticised the mayor for failing to reduce crime and poverty, and for delays in the expansion of the city's underground train system.───他也批评市长无法降低犯罪率和贫穷，以及布京地铁系统延长工程的延宕。

With an underground train system in part dating back to the 1860s, most of the city's commuters would agree.───本市的大多数通勤者也都这么认为，因为作为交通方式的一部分的地铁系统得追溯到19世纪60年代了。

And then there's the underground train system, with its mosaics of peasants revolting and huge chandeliers meant to look like stars.───下一个景点是地铁系统，站内装饰着农民起义的马赛克图案以及象征着星辰的枝型吊灯。

On Monday, two suicide bombings on Moscow's underground train system killed thirty-nine people.───星期一，在莫斯科地铁系统发生的两起自杀爆炸袭击造成39人丧生。

Take the MTR Corporation, which runs Hong Kong's underground train system and airport express line.───以负责香港地铁系统和机场快轨线路运营的香港地铁有限公司（MTRCorporation）为例。