The exterior surfaces are grooved so that rain water can drain easily.

Formulas for washing exterior surfaces before painting are available at paint stores.

The exterior surfaces were colored with red and yellow ochres.

The interior and exterior surfaces of the walls, however, are not alike.

On the other hand, most animal hairs, including wool, have exterior surfaces of overlapping scales moving toward the tip.

Here are methods for preparing exterior surfaces found on most houses.

A drenching system to cool exterior surfaces if the vessel was close to a burning platform.

Both aircraft suffered serious damage to their engines and exterior surfaces.

It would be less effort for objects to appear as ideas with simple exterior surfaces, without so many internal connections.

Excess monomer is rinsed from the exterior surfaces of the part.