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

Now this is a rain gauge, and it's sitting on a roof of a building, and when the water falls into this gauge, it sends a signal to the logic unit of the computer, which immediately notifies the memory bank of the computer to seek out its instructions for a rainy day.

这是一个雨量测量器，安装在一个楼房的,屋顶上，当水流入到这个测量器，它就给计算机的逻辑部件发送一个信号，计算机立即通知内存条,为下雨天找出相应的指令。

哈佛公开课 - 计算机科学课程节选