undo
/ʌnˈduː/📚 6732 187 1四级六级考研托福雅思高考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
verb [vt. 及物动词]解开，松开；消除…影响或结果，使恢复原状；撤销（先前的计算机指令）；破坏，毁掉
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。
noun [抽象名词]（计算机）撤消还原
Undo has some exceptions.
撤销有一些例外情况。
un(开) ＋ do(做) → 解开
单词造句:
- 网友用“Undo”造句精选
- I managed secretly to undo a corner of the parcel. 我设法偷偷地打开包裹的一角。
- I undid the bottom two buttons of my yellow and grey shirt. 我解开了我黄灰色相间衬衫最下面的两个钮扣。
- 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。
- She knew it would be difficult to undo the damage that had been done. 她知道难以挽回已造成的损失。
- He tried to undo the knot by picking at it with his fingers. 他用手指不停地扯，想把绳结解开。
- The knot was fastened in such a way that it was impossible to undo. 那个结系死了，没法解开。
- Oh, do let me help to undo it! 哦，让我帮你解开它吧！