a pause before doing something, or a feeling that you should not do it, especially because you are nervous, embarrassed, or worried (尤指因紧张、尴尬或担心而产生的)犹豫,踌躇,迟疑
After a brief hesitation, he answered ‘Yes'. 他犹豫片刻后回答说“是的”。
have no hesitation in doing something:
I would have no hesitation in recommending him for the job. 我非常乐意推荐他担任此工作。