vouch
v[Ipr]
1 ~ for sb/sth take responsibility for or express confidence in (a person, his behaviour, etc); guarantee 为(某人、 其行为等)担保或作证; 保证
I can vouch for him/his honesty. 我可以为他[他的诚实]作担保.
2 ~ for sth confirm (a claim, etc) by producing evidence or drawing on one's own experience(提供证据或现身说法)确定(某权利要求等)
Experts vouch for the painting's authenticity. 由专家确认该画是否为真迹.
Officials used to have trouble with the foreign names of people passing through Ellis Island, and because they were so busy, many people's names got changed in the rush.
For example, you might pick up a travel book and read a few pages before going to sleep. It is enough to dip into it and read bits here and there. In a word, this is tasting.