sell your soul
出卖灵魂；背叛原则或道德
口语·批评为利益背叛原则
英文释义
to compromise one's integrity, principles, or values for personal gain or success
例句
He sold his soul for a promotion at work, and now he regrets it every day.
典故来源
源自中世纪欧洲传说，人们相信可以与魔鬼交易，以灵魂换取世俗利益，后引申为为利益放弃道德原则。