在春节之前，每个中国家庭都会把自己家从上到下彻底打扫一遍。

Before the Spring Festival, every Chinese household would have their houses cleaned from top to bottom.

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让我们从上到下开始我们的讨论。

Let's start from the top and work our way down.

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忽然殿里的幔子，从上到下裂为两半。

At that moment the curtain of the temple was torn in two from top to bottom.

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We just go through the list top to bottom, left to right, and cross names off as we go.

我们会从上到下，从左到右看那个问题清单，如果解决了就把名字擦掉。

哈佛公开课 - 计算机科学课程节选

I know some of you come from Europe and other parts of the world where the ground floor is rez-de-chauss?e or some silly thing like this 1 and you push a button on the elevator to one and you go up to the first floor.

我知道你们中间有些人来自欧洲,或者世界其他地方，你们那里的一楼,和地面齐平，或者像这样可笑的事情,比如你要按下电梯的按钮,然后才能上到真正的1楼。

麻省理工公开课 - 固态化学导论课程节选

- Parses through them, which means to read through this-- what are really just text files, top to bottom, left to right.

从语法上分析它们，这就是说要阅读它-,实际上是一个文本文件，从上到下，从左到右。

哈佛公开课 - 计算机科学课程节选