• vt. 取消；解開；破壞；擾亂
• vi. 撤消

un-, 使相反，do, 做。即把做好的解開，打開。

undo (v.)

Old English undon "to unfasten and open" (a window or door), "to unfasten by releasing from a fixed position; to cancel, discharge, abrogate, reverse what has been done, put back in a former condition; bring to ruin, destroy," from un- (2) "opposite of" + do (v.). Related: Undone; undoing.

1. If Michael won, he would undo everything I have fought for.

如果邁克爾贏了，那我一直以來努力爭取的一切都將白費。

來自柯林斯例句

2. Once the damage is done, even modern surgery can't undo it entirely.

傷害一旦造成，即使是現代外科手術也無法將其完全消除。

來自柯林斯例句

3. A heavy-handed approach from the police could undo that good impression.

警方采取高壓手段可能會毀掉之前留下的好印象。

來自柯林斯例句

4. Can you undo this knot?

你能解開這個結 嗎 ?

來自《簡明英漢詞典》

5. His pride will undo him some day.

他的傲慢總有一天會毀了他.

來自《現代英漢綜合大詞典》