v.使無效；廢除；取消

The election results were nullified because of voter fraud. 因?yàn)檫x民舞弊，選舉結(jié)果無效。

Counterintelligence seeks to nullify the enemy's espionage efforts. 反間諜情報(bào)之目的是挫敗敵人的間諜活動(dòng)。

He has no right to nullify laws. 他無權(quán)廢除法律。

An unhealthy diet will nullify the effects of training. 不健康的飲食會(huì)抵消鍛煉的效果。