"Sorry for the rough takeoff," he shouted over the engine roar.

Kerans nodded, the Colonel's voice completely lost in the engine roar.

In a high speed plane this is much louder than the engine roar.

But how steady is China's historic rise and how long can its economic engine roar?

There was a muffled engine roar in the background.

In the distance, Nate heard a single engine roar to life.

"Evaluating," Aidoann's voice said, over an increasing engine roar from the other side.

The engine roar was now asynchronous, out of phase to the ear.

Before long, the engine roar of the huge Russian helicopter filled the air.

Bolan heard the van's engine roar to life and knew he was about to lose the gunmen.