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TOEFL IELTS BNC: 6417 COCA: 6632

undo

Word family 
Related topics: Computers
ldoce_346_gun·do /ʌnˈduː/ ●●○ verb (past tensepst undid /-ˈdɪd/, past participlepp undone /-ˈdʌn/, third person singular3rd undoes /-ˈdʌz/) [transitiveT]  
1  FASTEN1#TIE#to open something that is tied, fastened, or wrapped 解开，打开，松开〔某物〕
 The screws can be undone by hand.
这些螺丝可以用手拧开。
 I undid the package carefully.
我小心地打开包裹。
undo your jacket/shirt/bra etc 解开你的夹克/衬衫/胸罩等
 He undid his coat.
他解开外套。
► see thesaurus at open →5  See picture of unzip 拉开拉链, loosen 松开〔领带〕, unbutton 解开纽扣, untie 解开〔鞋带〕
2  IMPROVEto try to remove the bad effects of something you have done 消除…的坏影响
 We cannot undo the damage of a lifetime in only 30 days.
我们不能在短短的 30 天内消除影响一生的伤害。
 If a medicine is taken again too soon, it may undo all the good that has been done.
如果服用一种药物时间间隔过短，可能会抵消所有已产生的药效。
3. technical to remove the effect of your previous action on a computer 撤销〔先前的计算机指令〕
Examples from the Corpus
undo• Stelling was eventually undone by his political mistakes.• Rosie undid her necklace and put it on the bedside table.• Pop that unravels its own workings, undoes itself.• Marcus then undid Patrick's pyjama jacket and started to try to pull it off, then decided not to.• My fingers were so cold that I couldn't undo the buttons.• Cotton, with an assist from this public-spirited pillar, has done his best to undo the damage caused by the hogwash.• But there is no easy way to undo the nuclear binge of the cold war.• She undid the ribbon and let her hair fall over her shoulders.• She carefully undid the ribbons and opened the scroll.• I can't undo the string!• I wish it was possible to undo what I've done.
undo the damage• Maybe there was still time to undo the damage?• There wasn't any way Evelyn could undo the damage.• Cotton, with an assist from this public-spirited pillar, has done his best to undo the damage caused by the hogwash.• We certainly can not undo the damage of a lifetime in only thirty days, Sam.• It would be a cruel hoax because City would not be able to undo the damage these young people had suffered.• Yet the government can not easily undo the damage wrought by the courts.
un·do verb
Chinese
Syllable
Corpus
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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