the wheels have come off
情况发生了意想不到的错误或失败
口语·形容计划失败
英文释义
Things have gone wrong; a plan or situation has failed
例句
The project was going well until the wheels came off last week.
典故来源
源自车辆车轮脱落导致故障的比喻，指计划或情况突然崩溃。