Any prolonged contact with them can only have a disastrous effect on our troops.

Clearly she could not stand prolonged contact with the Pelavians.

You should avoid prolonged physical contact with the bottom of the computer when it does get warm.

First prolonged contact with the modern world came in the late 1960s.

But prolonged contact had a deteriorating effect on both sides.

He could not endure a prolonged contact with another body.

They seem to indicate prolonged contact, possibly up to 1450.

You have been in closer, more prolonged contact with him than any of us.

Close, prolonged contact is generally required to transmit an infection.

The main approach will be through fairly frequent and prolonged human contact.