白色七巧板
back down.打退堂鼓；放弃权利等网络让步；放弃原主张；取消前言例句筛选1.She wiped her eyes and sat back down near the bed.她擦干眼泪，又坐回那张病床边。2.Given that Treasury yields have since plunged back down to 2. 5% or so, how muchfurther can they fall?国债收益率自1980年以来已跌回至2.5%左右，接下来还会再跌多少呢？
风吹散了心
back down[英][bæk daun][美][bæk daʊn]退让，退回去，撤销（要求等）; 双语例句1Should I go back down or blow the door?我是该下去还是该把门炸了?2Somebody's got to back down.有人是得到了退缩。
