n.委任状；凭证；根据；正当理由

vt.担保；保证；辩解；授权

The police obtained a search warrant for his house. 警察拿到了搜查他家的搜查证。

Have you got a warrant of fitness for your car? 你有没有一张汽车合格证书?

You shouldn't arrest him without warrant. 你不能毫无根据地逮捕他。

He had no warrant for his suspicion. 他没有理由那么怀疑。

I will warrant him an honest and reliable man . 我担保他是个诚实可靠的人。

I warrant that this cloth is pure wool. 我保证这个布料是纯毛的。

Nothing can warrant such insolence . 这种无理是无可辩解的。

Nothing can warrant such severe punishment. 这样严厉的惩罚毫无根据。

warrant的基本意思是断言某事物是确定无疑的,有时可指个人在非常有把握的情况下作出某种承诺〔保证〕,引申可表示“有理由”。

warrant是及物动词,可接名词、代词、动名词、that从句作宾语,也可接双宾语,其直接宾语由that从句充当。warrant还可接(to be+) n./adj. 充当补足语的复合宾语。

warrant还可用作名词,意思是“正当理由; 许可证; 搜查证”。例如：The police must have a search warrant to search a house. 警察要搜查一座房屋必须有搜查证。