go off the boil
失去兴趣或动力
口语·描述失去动力
英文释义
to lose interest, motivation, or enthusiasm; to become less effective or successful
例句
He was a great player, but lately he's gone off the boil.
典故来源
源自烹饪术语，水煮沸后停止沸腾，比喻热情或效率下降。