invalidate

过去分词：

动词过去分词: invalidated

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：

This non sequitur invalidate s his argument.

他不根据前提推理因而论证无效.

To make ineffective; invalidate.

使无效；使失效

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。

The invalid brought back all he had eaten.

病人把吃下的东西都吐出来了。

The noise played on the old invalid's nerves.

噪音刺激着这个老年病人的神经。

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。

She thought of the old invalid gentleman.

她想起了生病的老先生。

The failures of the believers do not invalidate the truth.

信徒的失误或犯错并不能改变真理。

Nobody looks after the invalid.

没人照顾这个病人。