v.担保，证实，保证，自夸
n.被担保者

原形：vouch第三人称单数：vouches过去式：vouched过去分词：vouched现在分词：vouching

I vouch for the honesty of my friend; he would never cheat anyone.
我保证我朋友的诚实；他绝不会欺骗任何人。
The witness vouched that the defendant was at the scene of the crime when it occurred.
证人证实被告人在犯罪发生时在现场。
She vouched for her sister's sobriety, saying she hadn't seen her drink all day.
她为她姐姐的清醒状态担保，说她一整天都没喝酒。
The company vouched for the quality of their products, offering a satisfaction guarantee.
公司保证他们产品的质量，并提供满意保证。
After a thorough investigation, the detective vouched for the suspect's alibi.
经过彻底调查，侦探确认嫌疑人的不在场证明是真实的。
I vouch for the deliciousness of this homemade recipe – you just have to try it!
我保证这道家常菜非常美味——你一定要尝尝！
The judge vouched for the defendant's remorse and willingness to reform.
法官确认被告对所犯错误深感懊悔并愿意改过自新。
The organization vouched for the authenticity of the historical artifacts they were exhibiting.
该组织保证展出的历史文物的真实性。
I vouch for the punctuality of our team members; they always show up on time.
我保证我们团队成员的准时性；他们总是按时到达。
The teacher vouched for the student's dedication, as evidenced by their excellent grades.
老师为学生的专注力背书，他们的优秀成绩就是证明。