| 单词 | undo |
| 释义 | undo v (pt undid , pp undone ) [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. |
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