And, anyway, why did they need an underground train in those days?

An underground train passed like a hint of an earthquake.

Underground trains were kept running through the station to increase ventilation.

After a chance meeting on an underground train these two brilliant young people began a doomed love affair.

The subway (underground train) runs just below the building, but inside the trains cannot be heard.

Then, glancing from the window of the underground train, he recognized a station and realized his mistake.

She was calling me from central London, having travelled there with her young son on the underground train.

London's underground trains may run around the clock as part of the capital's effort to win the 2012 Olympics.

We then get on a 'paddy' - that's like an underground train.

We came up another elevator, and, like the underground train, this one had no trappings of tourism.