增加了新的地下铁路拼接组件。

New Underground Rail puzzle pieces have been added.

他以前是否常常乘搭地下铁路上班？

Did he use to take the underground to go to work?

他们两个是在加拿大碰面的，在那里她告诉了他一切她所知的东边地下铁路的信息。

The two met in Canada where she told him all she knew of the Underground Railroad in the East.

在伦敦，他们在地下铁路系统的朱比里线中的一条隧道布置了传感器，用以监测隧道内的排水量，温度和湿度。

And in London they deployed sensors to monitor displacement, temperature and humidity in a tunnel on the Jubilee Line of the Underground rail system.