sell your soul to the devil
出卖灵魂；为了私利而无坚守；对原则和价值观的背叛
口语·形容为成功不择手段
英文释义
to make a desperate or morally compromising deal or agreement in exchange for personal gain or success
例句
She sold her soul to the devil to become famous, but lost all her true friends.
典故来源
源自浮士德传说，描述学者与魔鬼梅菲斯特签订契约，以灵魂换取知识和权力，成为西方文学经典隐喻。