go off the boil
失去興趣或動力
口語·描述失去動力
英文釋義
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.
典故來源
源自烹飪術語，水煮沸后停止沸騰，比喻熱情或效率下降。