"The system is out of control because nobody's controlling it."

This is not a problem for most people because a healthy immune system can easily control it.

The system might not adequately control the rapidly rising cost of medical care.

The system provided for and controlled all the worker's needs.

The electrical system controls the four chambers of the heart.

Through this communication, the system also controls the amount the battery is charged.

The system can also control which chat room the user visits.

Used properly, he predicts, his system "will control the slaves for at least 300 years."

Instead, a national system has controlled air traffic for 45 years.