But those types are important, because they tell us something about what we want to do when we want to put them together.

但是这些类型很重要，因为它们会告诉我们一些,有关把他们放到一起,可以用来做什么的一些事情。

麻省理工公开课 - 计算机科学及编程导论课程节选

* So at top left we have a slash and a star - and that says everything that follows that-- those symbols is just a comment.

在左上角，大家可以看到,这是用来告诉大家，所有跟在它后面的-,标记都只是注释而已。

哈佛公开课 - 计算机科学课程节选

Well, there are four principal ways that composers signal to us the whereabouts of the down beat.

以下有四条主要途径,是作曲家用来告诉我们重拍在哪里的

耶鲁公开课 - 聆听音乐课程节选

So that is a flag that tells the compiler that I want to use or link into my own program code that someone else wrote that lives somewhere else on the system whose moniker is CS50.

所以那是一个标记，用来告诉编译器我想使用,或连接我自己的程序代码到一个叫做CS50的系统中的程序,可能其他人在那个系统写了这些程序。

哈佛公开课 - 计算机科学课程节选