"But he has also been smart enough to control the speed of the change."

"We're doing everything we can to try to control speed."

So we control the speed at which the acid goes in.

I was to stay three car lengths behind so he could control my speed.

Under state law, skiers are required to control their speed and course.

Players use a simple interface to control speed and direction.

He can control his speed and direction through sheer act of will.

Is good idea to control speed all the way down, especially for beginners.

We have no way to control their direction or speed, you understand.

This was used by the engine's driver to control the working speed, according to the work required.