The mule trains carried supplies to the remote mountain village.

The pack-trains carried supplies to the remote mountain village.

The rail trains are running on time.

The railway trains arrived at the station on time.

Snow trains are a common sight in the winter.

The spike trains of the neurons were recorded during the experiment.

The tidal trains are a common sight along the coast.

The train sheds at the station are undergoing renovations.

There were multiple train-wrecks on the tracks this morning.

The train tracks run parallel to each other.