So, let me introduce you to some of the topics we are going to be covering in chemistry this semester.

让我先给你们介绍一下,我们这个学期课程的主要话题。

麻省理工公开课 - 化学原理课程节选

Well, recall that very basic building block we introduced 1 last week which allowed you to grab a random number between 1 and 10 or 1 or a hundred.

好吧，让我们先回想一下上周介绍过的,能产生1~10之间，或者1~100之间随机数的1,基本构建块。

哈佛公开课 - 计算机科学课程节选