the wheels have come off
情況發生了意想不到的錯誤或失敗
口語·形容計劃失敗
英文釋義
Things have gone wrong; a plan or situation has failed
例句
The project was going well until the wheels came off last week.
典故來源
源自車輛車輪脫落導致故障的比喻，指計劃或情況突然崩潰。