invalidate

现在分词：

动词现在分词: invalidating

更多词形：

名词: invalidation | 动词过去式: invalidated | 动词过去分词: invalidated | 动词现在分词: invalidating | 动词第三人称单数: invalidates |

单词例句：

To annul or make void; invalidate.

使废除或使无效;使作废。

To invalidate(a will) by judicial action.

通过法律手续使（遗嘱）无效

The check becomes invalid after the specified date.

支票过期作废。

His invalid father is becoming a burden (to him).

他父亲体弱多病, （对他）渐渐成了累赘.

Does this invalidate the method of analysis?

这是否失效的分析方法？

The girl spent all her spare time to look after her invalid mother.

这个女孩把她所有的业余时间都用来照顾长期生病的母亲。

The invalid lay propped on the pillows.

那病弱者倚靠在枕头上。

A passport that is out of date is invalid.

护照过期是无效的。

She gave up her job to look after her invalid mother.

她辞去工作去照顾她有病的母亲。