undo
- v.<计>取消，撤销;消除，取消，废止(某事的影响);打开，解开，拆开;毁坏，破坏;<古>揭示……的奥秘，解密;使不安，使烦扰;打败，挫败;勾引，诱奸
- n.<计>取消，撤消，恢复
过去式： undone 现在分词： undoing 过去分词： undid 第三人称单数： undoes
un- 否定 + do v.做
undoverb
打开；解开；拆开
to open sth that is fastened, tied or wrapped
to undo a button/knot/zip, etc.
解开纽扣、解开绳结、拉开拉锁等
to undo a jacket/shirt, etc.
解开上衣、衬衫等
I undid the package and took out the books.
我打开包裹取出书来。
消除，取消，废止（某事的影响）
to cancel the effect of sth
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）
打败；挫败
to make sb/sth fail
The team was undone by the speed and strength of their opponents.
这个队被对手的速度和体力打败了。
undo
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1
VERB 解开；松开；打开
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.I managed secretly to undo a corner of the parcel...
我悄悄地设法解开了包裹的一角。
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2
VERB 撤销；抵消；消除
To undo something that has been done means to reverse its effect.A heavy-handed approach from the police could undo that good impression...
警方采取高压手段可能会毁掉之前留下的好印象。
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3
VERB 破坏；毁掉
If a person, organization, or plan is undone by something, that thing causes their failure.They were undone by a goal from John Barnes...
约翰·巴恩斯的一粒进球使他们落败。
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4
See also:undoing;undone
verb
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1
- remove the outer cover or wrapping of
- Let's unwrap the gifts!
- undo the parcel
- Synonym: unwrap
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2
- cause to become loose
- undo the shoelace
- untie the knot
- loosen the necktie
- Synonym: untie loosen
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3
- cancel, annul, or reverse an action or its effect
- I wish I could undo my actions
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4
- deprive of certain characteristics
- Synonym: unmake
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5
- cause the ruin or downfall of
- A single mistake undid the President and he had to resign
数据来源：WordNet
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Many times I had to undo a box because I forgot to list the contents .
有很多次，我因为忘记列出所装的东西而不得不再次把箱子打开。
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The clever fellow figured out how to undo the tamper proof latch !
那只聪明的家伙想出打开安全门的办法！
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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。
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Most of the work had been left undone .
大部分工作还没有做完。
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The team was undone by the speed and strength of their opponents .
这个队被对手的速度和体力打败了。
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I undid the package and took out the books .
我打开包裹取出书来。
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That one mistake was his undoing .
他一失足即成千古恨。
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The buttons had come undone .
纽扣都松开了。
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Her blouse had come undone .
她的衬衫扣松开了。
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Your flies are undone !
你的裤子前裆开着呢！
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Your laces are undone .
你的鞋带松开了。
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Your shoelace is undone .
你的鞋带松开了。
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She knew it would be difficult to undo the damage that had been done
她知道想要消除已经造成的损害是很难的。
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His lack of experience may prove to be his undoing
他缺乏经验可能会最终导致他的失败。
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A heavy-handed approach from the police could undo that good impression
警方采取高压手段可能会毁掉之前留下的好印象。
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Once the damage is done , even modern surgery can 't undo it entirely .
伤害一旦造成，即使是现代外科手术也无法将其完全消除。
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Some clamps that had held the device together came undone .
用来将装置夹在一起的一些夹子松开了。
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He left nothing undone that needed attention .
所有需要注意的事他都注意到了。
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If Michael won , he would undo everything I have fought for .
如果迈克尔赢了，那我一直以来努力争取的一切都将白费。
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I undid the bottom two buttons of my yellow and grey shirt
我解开了自己黄灰相间的衬衫上最下面的两个纽扣。
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If you want to repair the wheels you just undo the four nuts .
如果你想修理轮子，只需拧开这4个螺母就行了。
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Issues of national defense have been the undoing of Democratic candidates .
国防问题导致了民主党候选人的失利。
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By stopping smoking you are undoing most of the damage smoking has caused
通过戒烟可以消除吸烟造成的大部分危害。
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Fixing a 40-year-old wrong does not mean , however , that history can be undone .
但是，平反一件40年的冤案并不意味着历史可以重写。
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I managed secretly to undo a corner of the parcel
我悄悄地设法解开了包裹的一角。
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They were undone by a goal from John Barnes
约翰·巴恩斯的一粒进球使他们落败。
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Macbeth is the story of a Scottish soldier who becomes king but is undone by his own ambition .
《麦克白》讲述的是一个苏格兰士兵当上了国王，却毁于自己的野心。
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I undid my watch strap .
我解开了表带。
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There are all sorts of people undone .
各种人都无事可做。
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The thread is so tangled . I simply can 't undo it .
线乱成了一团，怎么也择不开了。