viper in bosom
背后藏着的敌人或背叛者
书面·形容被信任的人背叛
英文释义
to be betrayed or hurt by someone you trust
例句
He trusted her completely, but she turned out to be a viper in his bosom.
典故来源
源自伊索寓言《农夫与蛇》，农夫将冻僵的蛇放入怀中，蛇苏醒后咬死农夫，比喻恩将仇报。