set-back
n thing that hinders the progress of sth妨礙發展的事物
Hopes of an early end to the strike received/suffered a severe set-back yesterday. 希望罷工早些結束, 這一愿望昨日嚴重受挫.
Defeat in the by-election is a major set-back to the ruling party. 執政黨在補缺選舉中落選, 是一極大挫折. ,set `book (also ,set `text) book on which students must answer questions in an examination 必修課本
What are your set books for English A Level? 你們參加高級程度英語考試要讀哪些必修課本?