meet one's Waterloo 一败涂地

“一败涂地”，汉语成语，意思是彻底失败，形容失败到不可收拾的地步，可以翻译为“suffer a big [final/crushing] defeat; fall to the ground”，或用英文俗语“meet one's Waterloo”表示，意思是“to experience a final and resounding defeat.”。

例句：

他的改革一败涂地。

His reform collapsed all around him.

弱队在冠军赛中一败涂地，以17:1输给了联赛中最好的球队。

The underdog team met their Waterloo in the championship game and lost to the best team in the league 17-1.