undo

/ʌnˈduː/📚 6732 48 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。}

vt. 解开；取消；破坏；扰乱

单词造句:

undo

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

noun [抽象名词]（计算机）撤消还原

vt. 解开；取消；破坏；扰乱

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