• vt. 擔保；證明；傳出庭作證
• vi. 保證；證明；確定

來自拉丁語vocare,召喚，說話，詞源同voice。原指召喚到法庭出庭作證，引申詞義擔保。

vouch

vouch: [14] Vouch originally meant ‘call as a witness’; ‘guarantee’ is a 16th-century development. The word was borrowed from Old French voucher ‘summon’, which in turn appears to have evolved from Latin vocāre ‘call’ (source of English vocation, vocative, etc). Anglo-Norman used the Old French infinitive verb as a noun, meaning ‘summons’, from which English gets voucher [16]. Vouchsafe [14] originated as a compound of vouch ‘guarantee’ and safe.
=> vocation

vouch (v.)

early 14c., "summon into court to prove a title," from Anglo-French voucher, Old French vocher "to call, summon, invoke, claim," probably from Gallo-Roman *voticare, metathesis of Latin vocitare "to call to, summon insistently," frequentative of Latin vocare "to call, call upon, summon" (see voice (n.)). Meaning "guarantee to be true or accurate" is first attested 1590s. Related: Vouched; vouching.

1. Kim's mother agreed to vouch for Maria and get her a job.

金的母親同意為瑪麗亞擔保，好讓她找份工作。

來自柯林斯例句

2. He cannot vouch for the accuracy of the story.

他不能證明這一說法的準確性。

來自柯林斯例句

3. They asked whether I was prepared to vouch for him.

他們問我是否愿意為他作擔保.

來自《簡明英漢詞典》

4. I can vouch for the fact that he is a good worker.

我保證他是好員工.

來自《簡明英漢詞典》

5. I was in bed with flu. My wife can vouch for that / me.

當時我患流感臥床休息. 我妻子可為此/為我作證.

來自《簡明英漢詞典》