A setback is an event that delays your progress or reverses some of the progress that you have made.
近义词
upset , difficulty , hindrance
双语例句
例： The move represents a setback for the Middle East peace process.
此举意味着中东和平进程受挫。
例： He has suffered a serious setback in his political career.
他在政治生涯上遭遇了一次严重挫折。
例： The incident dealt a serious setback to reconciliation efforts.
该事件是调解努力遇到的一个重大挫折。