undo
美音:[ən´du:
]
英音:[ən´du:
]
vt.解开,松开 v.取消 撤消
难易程度:
undo为六级词汇
词形变化:
名词:undoer 动词过去式:undid 过去分词:undone 现在分词:undoing 第三人称单数:undoes
词根
un-=the reversal of an action 置于动词前，表示这个动词的相反的动作
近义词, 同义词
disjoin disconnect disengage disunite dissociate divorce part detach separate cut off rescind segregate set apart keep apart insulate isolate cut adrift loose unloose undo unbind unchain unlock fix unpack unravel disentangle set free liberate sunder divide subdivide severrevert turn back regress relapse recoil retreat restore undo unmake turn the tide turn back the clock
相关词
undo
/ʌn'du:; ʌn`du/
v (pt undid / Qn5dId; Qn`dId/, pp undone / Qn5dQn; Qn`dQn/) [Tn]
1 untie or unfasten (knots, buttons, etc); open (a parcel, an envelope, etc) 解开, 松开（结、钮扣等）; 打开, 拆开（包裹、信封等）
*My zip has come undone. 我的拉锁开了.
* I can't undo my shoelaces. 我解不开鞋带.
* undo (ie unravel) some knitting 拆开编结物. Cf 参看 do up (do2), do sth up.
2 destroy the effect of (sth); cancel 使（某事物）无效;取消; 废除
*He undid most of the good work of his predecessor. 他把前任的大部分业绩毁掉了.
* What is done cannot be undone. 已做的事是既成事实.
v (pt undid / Qn5dId; Qn`dId/, pp undone / Qn5dQn; Qn`dQn/) [Tn]
1 untie or unfasten (knots, buttons, etc); open (a parcel, an envelope, etc) 解开, 松开（结、钮扣等）; 打开, 拆开（包裹、信封等）
*My zip has come undone. 我的拉锁开了.
* I can't undo my shoelaces. 我解不开鞋带.
* undo (ie unravel) some knitting 拆开编结物. Cf 参看 do up (do2), do sth up.
2 destroy the effect of (sth); cancel 使（某事物）无效;取消; 废除
*He undid most of the good work of his predecessor. 他把前任的大部分业绩毁掉了.
* What is done cannot be undone. 已做的事是既成事实.
undo
v past tenseundid [-'dɪd/
1. We can not undo what has been done.
覆水难收。
2. In general, it's better to undo the problem by adding more iron-rich foods to the diet, because iron supplements can have serious shortcomings.
一般说来，解决问题的最好方法是在食谱中增加含铁丰富的食物，因为铁离子补剂可能存在严重缺陷。"
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覆水难收。
2. In general, it's better to undo the problem by adding more iron-rich foods to the diet, because iron supplements can have serious shortcomings.
一般说来，解决问题的最好方法是在食谱中增加含铁丰富的食物，因为铁离子补剂可能存在严重缺陷。"
更多句子>>>
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