undo /ʌnˈduː/ CET4 TEM4 ( undoing, undid, undone, undoes )

• 1. 

  V-T 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. 打开; 解开; 松开

  例：

  I managed secretly to undo a corner of the parcel.

  我设法偷偷地打开包裹的一角。

  例：

  I undid the bottom two buttons of my yellow and grey shirt.

  我解开了我黄灰色相间衬衫最下面的两个钮扣。

• 2. 

  V-T To undo something that has been done means to reverse its effect. 使无效

  例：

  A heavy-handed approach from the police could undo that good impression.

  警察的专制手段能使那个好印象化为乌有。

  例：

  She knew it would be difficult to undo the damage that had been done.

  她知道难以挽回已造成的损失。

• 3. 

  → see also undoing