undo
英 [ʌn'duː]
美 [ʌn'du]
词性
动词；
基本解释
vt.解开,松开v.取消 撤消
网络释义
撤销；解开；取消。
例证
1、I accidentally deleted the file, but luckily I was able to undo it.
我不小心删除了那个文件，但幸运的是我能够撤销。
2、Once the damage is done, it's difficult to undo the consequences.
一旦造成了损害，要想消除后果是很困难的。