un
do
第三人称
undoes
现在进行时
undoing
过去式
undid
过去完成时
undone
1
解开, 松开
to release or loosen something that is fastened or tied
及物动词
- She reached behind her back to undo the zipper of her dress.
她伸手到背后解开了她裙子的拉链。
- In a hurry, he struggled to undo the knots of his shoelaces and quickly slipped off his shoes.
匆忙中，他努力解开鞋带的结，并迅速脱掉了鞋子。
- The tailor had to undo the stitches and make adjustments to the hem of the dress for a perfect fit.
裁缝不得不拆开缝线并调整裙子的下摆以达到完美的合身。
- To take a break, she decided to undo the buttons of her jacket and relax for a moment.
为了休息一下，她决定解开夹克的纽扣，放松一会儿。
- The mechanic needed to undo the bolts to access the engine and perform necessary repairs.
机械师需要松开螺栓以接触发动机并进行必要的修理。
2
撤销, 取消
to make null or cancel the effects of something
及物动词
- Realizing the mistake, he quickly tried to undo the accidental deletion of the important file from his computer.
意识到错误后，他迅速尝试撤销从电脑中意外删除的重要文件。
- The software allows users to undo their last edits, providing a safety net in case changes need to be reversed.
该软件允许用户撤销他们的最后编辑，在需要撤销更改的情况下提供一个安全网。
- She had to undo the changes in the document.
她不得不撤销文档中的更改。
- The emergency brake can be used to quickly undo the acceleration and bring the vehicle to a stop.
紧急制动可以用来快速取消加速并使车辆停下来。
- After receiving negative feedback, the company worked hard to undo the damage to its reputation.
在收到负面反馈后，公司努力撤销对其声誉的损害。
3
撤销, 消除
to remove or negate specific qualities or features
及物动词
- The harsh weather conditions began to undo the vibrant colors of the outdoor mural.
恶劣的天气条件开始消除户外壁画鲜艳的色彩。
- The use of strong chemicals can undo the natural oils in your hair.
使用强效化学物质可以去除头发中的天然油脂。
- Continuous exposure to sunlight can undo the original brilliance of fabrics.
持续暴露在阳光下可以消除织物原有的光泽。
- His careless remarks threatened to undo the goodwill he had built with his colleagues.
他 careless 的言论威胁要撤销他与同事建立的好意。
- The decision to cut funding for the arts threatened to undo the cultural richness that had been cultivated over decades.
削减艺术经费的决定威胁要撤销几十年来培育的文化丰富性。
同义词：
反义词：
4
打开, 解开
to open or reveal the content of a package
及物动词
- She carefully undid the carefully wrapped package to reveal the surprise gift inside.
她小心翼翼地解开了精心包装的包裹，露出了里面的惊喜礼物。
- To check the contents, he began to undo the layers of packaging that surrounded the fragile item.
为了检查内容，他开始拆开包裹着易碎物品的包装层。
- The mystery box was securely taped, but with a pair of scissors, she easily undid the packaging to uncover its contents.
神秘盒子被牢固地用胶带封住，但她用一把剪刀轻松地拆开了包装，揭露了里面的内容。
- Upon receiving the delivery, the customer quickly undid the box to inspect the ordered items.
收到货后，顾客迅速拆开箱子检查订购的物品。
同义词：
反义词：
5
毁掉, 破坏
to cause someone or something to get ruined or destroyed
及物动词
- The torrential rain threatened to undo the delicate sandcastle they had built on the beach.
倾盆大雨威胁要毁掉他们在海滩上建造的精致沙堡。
- The unexpected economic downturn had the potential to undo years of financial stability for the small business.
意外的经济衰退有可能毁掉小企业多年的财务稳定。
- Reckless driving has the power to undo lives in a split second, causing irreversible harm.
鲁莽驾驶有能力在瞬间毁掉生命，造成不可逆转的伤害。
- A rumor started to circulate that could undo the reputation of the respected public figure.
开始流传一个可能毁掉这位受人尊敬的公众人物声誉的谣言。