The nullity and voidness of the clauses set out in the preceding paragraph shall not prejudice the validity of the other clauses of the contract.

Behind the desperate means the "beat" youngsters took in on the Road lies their sincerity and eagerness to achieve their spiritual salvation in a world of voidness.

Then according to the voidness of GPS satellites in different position, the effect on navigation accuracy of GPS(that is GDOP)is studied. The validity of voidness strategy is proved by simulation.