undo
verb [ T ] uk/ʌnˈduː/ us/ʌnˈduː/ undoing | undid | undone
(UNFASTEN)
B2 解开;打开;拆开
to unfasten something that is fastened or tied
Can someone help me to undo my seat belt? 有人能帮我解开安全带吗？
- More examples
- I undid the buttons on my blouse.
- He had eaten so much that he had to undo his belt a couple of notches.
- He had undone the buttons of his shirt, exposing an unsightly expanse of white flesh.
- If the curtains are too short you could undo the hem to make them a bit longer.
- He gently began to undo the zip at the back of her dress.
(REMOVE EFFECTS)
B2 消除，抵消（行为的效果）
to remove the good or bad effects of an action or several actions
I did a really tough aerobics class and then went out for dinner and undid (all) the good work! 我上了一堂活动量很大的有氧健身课， 然后出去吃饭，结果所有的锻炼都白做了！
It's very difficult to undo the damage that's caused by inadequate parenting in a child's early years. 孩子年幼时缺少父母关爱所造成的不良后果很难消除。