poacher turned gamekeeper
背离原来目标或行动，转为剥夺者或对抗者的立场和行动者
口语·描述身份反转
英文释义
someone who used to do something dishonest or illegal but now works to prevent others from doing it
例句
The former hacker became a cybersecurity expert—a real poacher turned gamekeeper.
典故来源
源自英国乡村，偷猎者（poacher）转为看守猎物者（gamekeeper），比喻立场转变。