The engine throbbed smoothly and the green hills ofVirginia moved slowly by.

The car's headlights were dark, but the engine was throbbing harshly under the hood.

There was a sharp whine, coughing of an engine, and then the engine throbbed into life.

Heads began to turn and scan the dark sky for the zeppelin, whose gas engine was throbbing clearly in the still air.

Over to the right, he heard a slow chug-chug and realized that another boat was waiting there, its engine throbbing in the darkness.

Weaver started the ignition and the engine throbbed into life first time.

While the engine throbbed, a roar came from the garage.

Girders groaned in the Invincible, the engines moaned and throbbed.

And the engines throb with this sort of deep thrum thrum sound.

The engine throbbed between his thighs, the sound of it combined with the wind roaring in his ears.