What could you do with them if unusual surfaces were used?

The same surface can be used to play both Types of tennis match.

The same surface can be used to play both doubles and singles.

A synthetic, slower surface will also be used for the first time.

A selective surface can be used when energy is being extracted from the sun.

The Republicans did not surface with ammunition that some had hoped could be used in the campaign season.

This brick, for example, can give a variety of prints, according to which surface is used.

Here the term floor surface or just surface is used.

These surfaces may be used as a tool for local governments in assessing building development.

A red-hot surface can also be used to provide ignition.