Just reverse the process.

只要把上面的过程反过来。

哈佛公开课 - 计算机科学课程节选

Now, you might in some context have to add the right kind of parentheses so that GCC or your compiler doesn't get confused, but really they just reverse each other's processes.

现在，你可能要在相应的地方,加入一些圆括号,这样GCC或编译器就不会误解你的意思，但是它们颠倒了相互的过程。

哈佛公开课 - 计算机科学课程节选

The reason that it seems difficult to say though is because it seems like it would be just as plausible to say the reverse.

但真的要说出来似乎有困难,因为反过来说也貌似合理。

耶鲁公开课 - 死亡课程节选

Cmp is just saying, cmp and if I want to reverse it, it goes the other way.

一个比较的方法了，的意思是，是不是大于，is，this，bigger，than，如果我反转了参数的顺序，它的意思就是是不是小于了。

麻省理工公开课 - 计算机科学及编程导论课程节选

If you just scramble a sentence, it's pretty useless because the recipients are never going to be able to reverse the process.

如果你只是加密一个句子，这是毫无用处的,因为收件人没法将这个句子,反加密出来。

哈佛公开课 - 计算机科学课程节选