[] (undoes/ʌnˈdʌz/, undid/ʌnˈdɪd/, undone/ʌnˈdʌn/) to cancel the effect of sth使复原；使失效；使复旧◆It's not too late to undo some of the damage.还来得及挽回部分损失。◆UNDO (= an instruction on a computer that cancels the previous action)撤销（计算机的一个还原指令）to open sth that is fastened, tied or wrapped解开；拆去；放松；脱