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TOEFL IELTS BNC: 6417 COCA: 6632
undo
ʌnduː ʌnˈduː ʌnˈdu
Word forms: 3rd person singular present tense undoes, present participle undoing, past tense undid, past participle undone
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. 解开；松开；打开

  • I managed secretly to undo a corner of the parcel. [VERB noun]

    我悄悄地设法解开了包裹的一角。

  • I undid the bottom two buttons of my yellow and grey shirt. [VERB noun]

    我解开了自己黄灰相间的衬衫上最下面的两个纽扣。

  • Some clamps that had held the device together came undone. [VERB-ed]

    用来将装置夹在一起的一些夹子松开了。

SYN open, unfasten, loose, loosen
2 VERB 撤销；抵消；消除 To undo something that has been done means to reverse its effect. 撤销；抵消；消除

  • A heavy-handed approach from the police could undo that good impression. [VERB noun]

    警方采取高压手段可能会毁掉之前留下的好印象。

  • She knew it would be difficult to undo the damage that had been done. [VERB noun]

    她知道想要消除已经造成的损害是很难的。

  • If Michael won, he would undo everything I have fought for. [VERB noun]

    如果迈克尔赢了，那我一直以来努力争取的一切都将白费。

SYN reverse, cancel, offset, wipe out
3 VERB [usually passive] 破坏；毁掉 If a person, organization, or plan is undone by something, that thing causes their failure. 破坏；毁掉

  • They were undone by a goal from John Barnes. [be V-ed by n]

    约翰·巴恩斯的一粒进球使他们落败。

  • Macbeth is the story of a Scottish soldier who becomes king but is undone by his own ambition. [be V-ed by n]

    《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。

SYN ruin, defeat, destroy, wreck
4 See also: undoing  undone 
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TOEFL IELTS BNC: 6417 COCA: 6632
TOEFL IELTS BNC: 6417 COCA: 6632
undo verb
⇨ undo (undo a button) ⇨ reverse (undo the damage) undo

verb

undo ♦︎ open ♦︎ untie ♦︎ unbutton ♦︎ detach ♦︎ unfasten ♦︎ unzip ♦︎ unwrapThese words all mean to open sth that is fastened, tied or wrapped, or to separate two things that are joined together. 这些词均表示打开、解开、拆开。PATTERNS AND COLLOCATIONS 句型和搭配◆to undo / open / untie / unwrap a parcel / package◆to undo / untie a knot / rope / string / ribbon / lace / shoelace◆to open / unwrap a present◆to undo / unbutton / unfasten / unzip a jacket / coat / fly◆to undo / unbutton / detach / unfasten a collar◆to undo / unfasten a belt / button / clip / strap / zip / buckle / catch / seat belt◆to undo / unbutton a blouse / shirt■ undo ʌnˈduː (undid, undone) [transitive] to open sth that is fastened, tied or wrapped 打开；解开；拆开◆I can't undo this zip－it seems to be stuck.我拉不开这个拉链，好像卡住了。◆He undid his jacket and threw it over a chair.他解开上衣，扔到椅子背上。◆I undid the package and took out the books.我打开包裹取出书来。 OPP do (sth) up ⇨ tie ■ open [transitive] to remove the lid or undo the fastening of a container, etc. in order to see or get what is inside 打开，开启（盖子、封口等）◆Shall I open another bottle?要不要我再开一瓶？◆He opened the letter and read it.他拆开信读了起来。■ untie ʌnˈtaɪ [transitive] to undo a knot in sth; to undo sth that is tied 解开⋯的结；打开◆Can you untie this knot for me?你能帮我解开这个结吗？◆He untied the rope and pushed the boat into the water.他解开缆绳，把小船推入水中。◆She untied his hands and let him go.她解开他的双手把他放了。OPP tie ⇨ tie , tie ⇨ attach ■ unbutton [transitive] to undo the buttons on a piece of clothing 解开⋯的纽扣◆He unbuttoned his shirt.他解开衬衣扣子。 OPP button ⇨ tie   see also button ⇨ button noun 2 ■ detach dɪˈtætʃ [transitive, intransitive] (rather formal) to remove sth from sth larger; to become separated from sth 拆卸；使分开；脱离◆Detach the coupon and return it as soon as possible.将赠券撕下后尽快寄回。◆One of the panels had become detached from the main structure.其中一块镶板已从主体结构上脱落。◆The skis should detach from the boot if you fall.要是你跌倒了，滑雪板应会脱离靴子。 OPP attach ⇨ attach ■ unfasten [transitive] (rather formal) to open sth that is fastened 解开；松开；打开◆Passengers are permitted to unfasten their seat belts.乘客获准解开安全带。 OPP fasten ⇨ tie   see also fastener ⇨ button noun 2 ■ unzip ˌʌnˈzɪp (-pp-) [transitive, intransitive] to undo a bag or piece of clothing by unfastening the zip; (of a bag or piece of clothing) to open with a zip 拉开⋯的拉链；（包或衣服）用拉链拉开ⓘ A zip (BrE) or zipper (NAmE) is a type of fastener that consists of two rows of metal or plastic teeth that you can pull together to close sth or pull apart to open it. * zip（英式英语）或zipper（美式英语）指拉链、拉锁◆She unzipped his jacket, as if he were a child.她拉开他的上衣拉链，仿佛他是一个孩子。◆The bag unzips at the side.这个包的拉链开在侧面。 OPP zip ⇨ tie   see also zip , zipper ⇨ button noun 2 ■ unwrap ʌnˈræp (-pp-) [transitive] to take off the paper, etc. that covers or protects sth 拆开⋯的包装◆Don't unwrap your present until your birthday.礼物要等到你生日那天才可以打开。 OPP wrap ⓘ To wrap sth (up) is to cover it completely in paper or other material, for example when you are giving it as a present. * wrap sth (up)指用纸或其他物料把东西包裹起来，如包装礼物等◆He spent the evening wrapping up the Christmas presents.他花了一晚上把圣诞礼物都包了起来。◆individually wrapped chocolates独立包装的巧克力
TOEFL IELTS BNC: 6417 COCA: 6632

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