knock-back
noun /ˈnɒk bæk/
/ˈnɑːk bæk/
(informal)- a difficulty or problem that makes you feel less confident that you will be successful in something that you are doing, especially when somebody rejects you or something you suggest or ask
（尤指被人拒绝时受到的）挫折，挫伤，打击 - He had a few knock-backs, but eventually became one of the most highly paid footballers in England.
他经历了几次挫折，但最终成为英国收入最高的足球运动员之一。
- He had a few knock-backs, but eventually became one of the most highly paid footballers in England.