vouch for
phrasal verbvouch for somebody/something
- (formal) to say that you believe that somebody will behave well and that you will be responsible for their actions
替…担保（或保证） - Are you willing to vouch for him?
你愿意为他担保吗？ - I can vouch for her ability to work hard.
我保证她能够努力工作。
- Are you willing to vouch for him?
vouch for something
- (formal) to say that you believe that something is true or good because you have evidence for it
（因有证据而）为…作证 - 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。
- I was in bed with the flu. My wife can vouch for that.