And if they can't answer that question, I say well, before you even run it, have an answer to that.

如果他们没法回答这个问题的话，我会说好吧，在你运行实验之前，先回答这个问题吧。

麻省理工公开课 - 计算机科学及编程导论课程节选

And I'm going to pause for a minute, before I run it, and ask each of you to compute in your head what you think the answer should be.

我将暂停一会儿，在我运行之前，我想问问你们你们,心算得出的答案应该是什么。

麻省理工公开课 - 计算机科学及编程导论课程节选

I can tell you the answer, but that's because I've cheated, run the program before.

我可以告诉你答案，但这是因为我作弊了，我之前运行过一次程序。

麻省理工公开课 - 计算机科学及编程导论课程节选

So before I try and run my program, I test each part of it independently.

因此在我尝试运行我的程序之前，我都会对它的每个部分进行独立的测试。

麻省理工公开课 - 计算机科学及编程导论课程节选

And that does two things: bug one, it helps catch bugs in your code, and secondly it often converts it into a more efficient sequence of instructions before you actually go off and run it. All right?

这有两点好处：,第一是可以帮助你发现程序中的，第二是把你的代码,在运行之前,转换为更有效率的指令的集合，对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选

Always guess before you run your program what you think it's going to do.

当你运行程序之前,总是先想想程序会怎么做。

麻省理工公开课 - 计算机科学及编程导论课程节选