英语语法分析

But this nullification does not affect the validity of the entire air transport contract.

但是，此种条款的无效，不影响整个航空运输合同的效力。

The nullification system of insurance contract is not quite perfect in the insurance law of our country.

在我国保险法中，保险合同的无效制度不很完善。

Finally let us consider a case in which the opponent is downed by the nullification of his resistance to gravity.

最后，让我们考虑一个案件中，对手是被击落通过废止他的抵抗重力。