I had heard the sound of their engine for some minutes, behind us.

The sound of their engine came back to them across the dark water.

The fire department took good care of the engine while it was in service.

It is very common to increase the performance of the engine even if its against the law in some countries.

It's been a long while since I worked on any sort of engine.

It was difficult to hear anything over the sound of their own engine.

Cost was the main goal in the design of the engine.

The first run of the engine was on September 6, 2002.

A total of 1,454 engines had been built by 1800.

The only difference between the two was the type of engines used.