“集成应用程序级别的诊断”一个应用程序能够通过自检来发现问题，而且这些问题是用户和测试可能无法发现的。

"Build in application level diagnostics" : an application that can check its own health to find things tests and users might not be able to tell you.

youdao

By putting it in a function bug if I find a bug and I change my program I can just run the function again.

把我输入的值放到一个函数里,如果以后我在程序中发现了一个,并对程序进行更改的话，我可以直接。

麻省理工公开课 - 计算机科学及编程导论课程节选

Does he want to say that he's just an author function, that his textual field is a kind of set of structural operations within which one can discover an author?

他是不是想说他只是个功能性的作者，而他所写的文章只是一套,用于发现作者的结构上的应用程序？

耶鲁公开课 - 文学理论导论课程节选

bug And maybe by understanding why it worked on a and not on b, you'll get a lot of insight that you won't if you just focus on the bug.

发现很多东西，而你只关注,本身的话就发现不了这么多东西,如果知道你的程序至少还对。

麻省理工公开课 - 计算机科学及编程导论课程节选