let someone off the hook
放过某个人，不追究他的过错或责任
口语·免除责任或惩罚
英文释义
to not hold someone accountable or responsible for something; to release someone from punishment or obligation
例句
I was late, but my boss let me off the hook this time.
典故来源
源自钓鱼术语，'hook'指鱼钩，'let off'比喻释放责任。