UNDO REDO数据库备份与恢复技术;撤消;操作上的;放弃和重做
undo flag撤销旗标;复原签出
cant undo无法撤消;斜面撤消;粤语撤消
Undo Advisor还原指导;撤销顾问;还原管理顾问工具
Undo Disks撤销盘;撤销磁盘
UNDO U回退一步;撤销
undo retweet撤消锐;撤消转推
undo mistakes地返回错误
V-T（及物动词） If you undo something that is closed, tied, or held together, or if you undo the thing holding it, you loosen or remove the thing holding it. 打开; 解开; 松开
I managed secretly to undo a corner of the parcel.
我设法偷偷地打开包裹的一角。
V-T（及物动词） To undo something that has been done means to reverse its effect. 使无效
A heavy-handed approach from the police could undo that good impression.
警察的专制手段能使那个好印象化为乌有。
（） → see also undoing