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1·Are you willing to vouch for him?

你愿意为他担保吗？《牛津词典》

2·I can vouch for her ability to work hard.

我保证她能够努力工作。《牛津词典》

3·He cannot vouch for the accuracy of the story.

他不能证明报道的准确性。《柯林斯英汉双解大词典》

4·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，好让她找到一份工作。《柯林斯英汉双解大词典》

5·I was in bed with the flu. My wife can vouch for that.

我患流感卧床休息了。我的妻子可为此作证。《牛津词典》

6·My friends will vouch for me.

我的朋友们可以为我作保。

7·I can vouch for his honesty.

我可以为他的诚实做担保。

8·Yeah, we do, I can vouch for that.

的确是，我可以向你保证。

9·And I can vouch for that firsthand.

我可以保证这第一手资料。

10·I said, yeah, I'm going to vouch for.

我说，是，我给他担保，因为我相信他。

(1)vouch for担保；保证