(undoes; past undid; past participle undone)with obj.
1
- unfasten, untie, or loosen (something)解开; 打开; 松开：
the knot was difficult to undo.
这个结很难解。
2
- cancel or reverse the effects or results of (a previous action or measure)消除…影响或结果; 使恢复原状：
there wasn't any way Evelyn could undo the damage.
伊芙琳根本无法消除那损害所造成的影响。
2.1
- cancel (the last command executed by a computer)取消（计算机上一个执行的命令）; 恢复。
3
- formal cause the downfall or ruin of〈正式〉使垮台; 毁灭：
Iago's hatred of women undoes him.
埃戈对女性的仇恨毁了他自己。
- Computing a feature of a computer program that allows a user to cancel or reverse the last command executed【计算机】撤消还原。
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