It will wash away and so you got to pick the right materials in order to build a bridge.

它可能会被水冲走,之后人们就会选择更好的材料,以造出了更为坚固的桥

耶鲁公开课 - 生物医学工程探索课程节选

Before I do that though, let me try and give you an analogy to keep this in mind of why we want to basically build these abstractions and what we need in order to have them work together.

在我们看例子之前请让我打个比方,以便你们能记住我们,为什么要建立这些抽象,以及要使它们协调工作,我们需要做些什么。

麻省理工公开课 - 计算机科学及编程导论课程节选

In order to do that, we build a project.

为此，创建了一个项目。

麻省理工公开课 - 媒体、教育、市场课程节选