The fabric acts as a filter to prevent debris and even bacteria from entering the area.

This end usually has a strainer to prevent debris from entering the pipe.

The pool is typically covered to prevent leaves and other debris from falling in.

The action remaining closed the majority of the time prevents foreign debris from entering the gun.

The space agency spent more than two years redesigning the tank to prevent most such debris shedding.

Ream the holes; the water will prevent debris from entering the spray tube.

One of the bridges is designed to act as a "drift catcher", preventing large debris from entering the tube further downstream.

Areas have been roped off to prevent debris from falling on the youngsters.

It has a cartridge filter to keep the exhaust air clean and to prevent debris from getting to the motor.

After the hurricane took out a window upstairs, he stood for hours holding up a tarp to prevent debris from blowing in.