1.   A second entry and exit gate was available, but the soggy conditions would have rendered it useless within minutes.

2.   Both runways have been rendered useless by enemy bombings.

3.   Plentiful moisture in the extreme northern latitudes, for example, is rendered useless by severe winter frost and an abbreviated growing season.

4.   Farms and factories were burned, destroyed, or rendered useless.

5.   And it has rendered largely useless the helicopters that many big companies keep for ferrying executives from urban meetings to suburban outposts and back.

6.   A sophisticated foe might disarm, destroy or confuse unpiloted aircraft, rendering them useless or even turning them against American forces.

7.   But environmentalists say a strict pollution limit would be rendered useless if the state adopts a lax measuring scheme.

8.   But experts have warned that such an assault may come without warning, rendering gas masks useless.

9.   But this is how you beat the Sonics, whose trapping, rotating defense has been rendered useless.

10.   But when war came again, the German army simply marched around the Maginot Line, rendering it useless.