Never let the engine run more than once a month or two?
The engines were not running at the time of the fire.
The right engine ran for a further two more minutes, and then stopped as well.
He had no idea why the engines were still running.
Nobody would ever be out there while the engine was running, of course.
These must be the two that were on the ground with their engines running an hour ago.
The first complete engine finally ran on 26 March 1948.
The engine was still quietly running and nothing happened for a while.
Its engines were running when I arrived at about four.
The engine was still running, and I heard the doors being opened.
He is able to keep any engine running, no matter its condition.
The weather was cold and I left the engine running.
He put the car in park but left the engine running.
I will be waiting outside in the car with the engine running.
He opened his door and got out, leaving the engine running.
Two people got out and ran toward it, leaving the car's engine running.
He should have known that nothing in Russia happened fast enough to leave the engine running.
He left his brother in the car with the two children and the engine running.
With one engine running, the remaining three could be started.
His mother was in the car with the engine running.