You put some inputs in, it has a contract that says if you put the right kind of inputs in you'll get a specific output coming out, but you don't have to know what's inside of that box.

你可以将输入一些内容,它相当于一个条件合约,如果你的输入是正确的，你就能得到特定的输出,但是你不知道盒子里面有些什么。

麻省理工公开课 - 计算机科学及编程导论课程节选

Even though this looks like what the out-- this looks like the output you want, "Oh, hi world" and then everything else should go on the next line.

即使这样看起来和你-,想要的输出“Oh，hi，world“没啥两样“,仅仅只是把其他代码往下挤了一行。

哈佛公开课 - 计算机科学课程节选

I'm gonna run a.out and your teaser for the kinds of programs you can write after years and years and years of practice will give you output like this.

运行a，out，这类麻烦的程序,你多年多年之后也能写,因为最后的结果是这样的。

哈佛公开课 - 计算机科学课程节选

Why? Well, out presumably 'cause it's output, a because it's the first letter of the alphabet.

为什么？也许是因为out代表是输出吧，而a则是字母表的第一个吧。

哈佛公开课 - 计算机科学课程节选