What you won't see is that a simple "undo" would bring it all back -- but only if you don't panic and close the file or try to revert to the last save.

其实，一个简单的 “撤销” 就会使所有的内容都恢复 —— 但是这要求您不惊慌并关闭文件，或者试图回复到上一次保存的文件。

youdao

"It took a lot of time to undo the damage that was done, " said the Democrat close to Ms. Lopez, who declined to be interviewed.

WSJ: Prank and File: These Military Reports Are Out of Line

Yet, by taking such a preposterous position in suggesting that the President has done anything that is even remotely close to having committed an impeachable offense, all the senator is doing is attempting to undo the November 2012 election results or influence the 2014 elections.

FORBES: No, Virginia, We Are Not Having A Watergate Style Impeachment Moment