undo/ʌn'duː/

v. make sth no longer tied or fastened

➭ ts. undoes/ʌn'dʌz/

v. [T] 解开，松开：undo one's shoelaces/shirt 松开鞋带/解开衬衫

◇undo a button/zip 解开纽扣/拉开拉链

构词un- + do

➭ pt. undid/ʌn'dɪd/

➭ pp. undone/ʌn'dʌn/