It is also one portion of the automation systems of power supply for the mass transit railway.

同时它也是轨道交通供电自动化系统的一个组成部分。

youdao

As a result, more and more research is being done on the study of urban transit railway systems.

因此，有越来越多关于城市铁路运输系统的研究。

youdao

In the inner harbour, they are a supplementary mode of transport to cross harbour buses and the Mass Transit Railway.

至于港内交通方面，则是隧道巴士和地下铁路以外的辅助交通工具。

youdao

But all those potential bonanzas could be derailed if Mass Transit Railway stock goes off track.

CNN: Hong Kong Packs the Train

July was in fact a postponement from April -- and the later date did matter to the Mass Transit Railway.

CNN: A Date with Disaster

As such, the Mass Transit Railway (MTR) added platform safety doors to all of its 84 stations, finishing the multi-year construction project in 2011.

BBC: Subway systems by the numbers