sell someone out
背叛某人,出賣某人
口語·形容背叛或出賣他人
英文釋義
to betray or deceive someone, often for personal gain or advantage
例句
I trusted him, but he sold me out to the boss for a promotion.
典故來源
源自19世紀(jì)商業(yè)或政治語境,原指出售股份或背叛盟友,后泛指為私利出賣他人。