undo

英 [ʌnˈduː]

美 [ʌnˈduː]

v.  打开; 解开; 拆开; 消除，取消，废止(某事的影响); 打败; 挫败

过去分词：undone　过去式：undid　现在分词：undoing　第三人称单数：undoes　

高考CET4CET6考研TOEFLIELTSTEM4TEM8计算机

Oxford 3000 / Collins.1 / BNC.6417 / COCA.6632

牛津词典

verb

• 打开；解开；拆开
  to open sth that is fastened, tied or wrapped
  1. to undo a button/knot/zip, etc.
     解开纽扣、解开绳结、拉开拉锁等
  2. to undo a jacket/shirt, etc.
     解开上衣、衬衫等
  3. 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
  1. 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。
  2. 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。
  3. 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
  1. 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。

柯林斯词典

• VERB 解开；松开；打开
  If youundosomething that is closed, tied, or held together, or if youundothe thing holding it, you loosen or remove the thing holding it.
  1. I managed secretly to undo a corner of the parcel...
     我悄悄地设法解开了包裹的一角。
  2. 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。
  3. 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。
• VERB 撤销；抵消；消除
  Toundosomething that has been done means to reverse its effect.
  1. 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。
  2. 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。
  3. 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。
• VERB 破坏；毁掉
  If a person, organization, or planis undone bysomething, that thing causes their failure.
  1. They were undone by a goal from John Barnes...
     约翰·巴恩斯的一粒进球使他们落败。
  2. 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。
• See also:undoingundone

英英释义

verb

• remove the outer cover or wrapping of
  1. Let's unwrap the gifts!
  2. undo the parcel
  Synonym:unwrap
• cause to become loose
  1. undo the shoelace
  2. untie the knot
  3. loosen the necktie
  Synonym:untieloosen
• cancel, annul, or reverse an action or its effect
  1. I wish I could undo my actions
• deprive of certain characteristics
  Synonym:unmake
• cause the ruin or downfall of
  1. A single mistake undid the President and he had to resign

双语例句

• The undo command change to can not undo on the menu if you cannot reverse your last action.
  如果不能退回最后一个操作，撤消命令会变化到菜单上的不能撤消命令。
• Use Ctrl-Z or undo on the edit menu to undo your changes.
  使用ctrl-z或“编辑”菜单中的“撤消”来撤消所做的更改。
• I managed secretly to undo a corner of the parcel
  我悄悄地设法解开了包裹的一角。
• He is choking, undo him.
  他快窒息了，把他的衣服解开。
• You can undo the applied filter from the context menu or from the drop-down menu.
  您可以从内容菜单或者下拉菜单中取消应用的过滤器。
• During the course of editing, undo, and redo, the model is the only thing that endures.
  在编辑、撤销和重做的过程中，模型是唯一保持不变的。
• You can only undo a single transaction.
  只能撤消一个事务。
• There is no "undo" or "undelete" in your database.
  你的数据库中不能“取消”或者“恢复被删除的文件”。
• When used as comparison functions, Undo and Redo are really one function and not two.
  在使用比较功能时，撤销和恢复实际上是一个功能，而不是两个。
• Database-2 writes Undo and Do records and state to its recovery log, again just as Database-1 did.
  Database-2把Undo和Do记录及状态写入它的恢复日志，再次像Database-1做的一样。