1. 保证：votive 奉献的 | vouch for 保证 | vouch 担保

2. 担保：trick 俚妓女演出的色情表演 | vouch for 担保 | on the line 与观者的眼睛相平 模棱两可 处于危险中, 立即

3. 为. . 担保：vouch 担保,保证 | vouch for.. 为. . 担保 | a gift voucher 赠卷

1. 为…担保(或保证)
If you say that you can or will vouch for someone, you mean that you can guarantee their good behaviour.

e.g. Kim's mother agreed to vouch for Maria and get her a job.
金的母亲同意为玛丽亚担保，好让她找份工作。

2. 证明;证实
If you say that you can vouch for something, you mean that you have evidence from your own personal experience that it is true or correct.

e.g. He cannot vouch for the accuracy of the story.
他不能证明这一说法的准确性。