u-bahn in inglese:

They took the subway.

Do you go by bus, by train, or by subway?

If you always travel by subway, you seldom surface other than at your stop.

Subway fares will be raised as of April 1st, 1999.

The only one who enjoys a crowded subway car is a pickpocket.

What subway goes to the center of town?

In London, the police are always worried about finding a bomb on the train or subway.

The new subway enables me to get to school in 20 minutes.

Whenever I get on the subway, I put my wallet in my front pocket.

The subway is faster than the streetcar.

The subway in London is known as "the Tube."

The subway line is going to be extended out this way.

In Britain they call the subway the underground.

She is in a temper, because she missed her usual train in the subway and had to walk to work.

an electric railway operating below the surface of the ground (usually in a city); "in Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'" metro, subway system, underground, tube