- undo something
to open something that is fastened, tied or wrapped 打开；解开；拆开 to undo a button/knot/zip 撤消按钮/结/拉链 to undo a jacket/shirt 撤消外套/衬衫 I undid the package and took out the books. 我打开包裹取出书来。 🔊🔊
- undo something
to cancel the effect of something 消除，取消，废止（某事的影响） He undid most of the good work of the previous manager. 他把前任经理的大部分功绩都毁掉了。 🔊🔊 It's not too late to try and undo some of the damage. 想办法补救部分损失还为时不晚。 🔊🔊 UNDO (= a command on a computer that cancels the previous action) 撤销（计算机的还原指令） Just select ‘Edit’ and ‘Undo’ to cancel the previous action. 只要选择“编辑”和“复原”便可撤销前一个动作。
- [usually passive] undo somebody/something (formal)
to make somebody/something fail 打败；挫败
Word OriginOld English undōn (see un-, do1).