So I just realized this is a new MacBook Pro that I didn't actually download the compiler onto it apparently.

所以，我才意识到这是一台新电脑,显然我并没有把编译器安装到上面。

哈佛公开课 - 计算机科学课程节选

> So this time I had the foresight to install this compiler but what I'm gonna do is this.

>，这次我非常有先见之明地,安装了这个编译器，但是我这次要做的却是。

哈佛公开课 - 计算机科学课程节选