n.审批；证实
动词vouch的现在分词形式.
I can vouch for him/his honesty. 我可以为他[他的诚实]作担保。
Experts vouch for the painting's authenticity. 由专家确认该画是否为真迹。
The experts have vouched for the painting's authenticity. 专家已经确认了该画是真迹。
I can vouch for his honesty. 我可以为他的诚实做担保。
vt.断言；保证
