back down片语动词KK [bæk daʊn] /bæk daʊn/发音片语动词1让步、退让、认输Neither side was willing to back down after hours of talks.经过数小时谈判,双方都不愿让步。2撤回、收回、放弃The company backed down from its threat to sue the reporter.公司撤回了要起诉那名记者的威胁。3退缩、打退堂鼓He talks tough but always backs down at the last minute.他嘴上很强硬,最后一刻却总是退缩。用这个字练口说→