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
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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。
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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。
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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
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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。
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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。
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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
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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。
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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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