We are a recurring theme it seems on that particular website.

我们反复重复着一个主题,在那个特殊的网站上。

哈佛公开课 - 计算机科学课程节选

So actually thinking about how humans interact with machines and how you can optimize your so called user interface or GUI interface is also one of the themes in this particular field.

因此考虑人与机器如何交互动,以及如何优化所谓的用户界面,或者GUI界面就是这个特殊领域的一个主题。

哈佛公开课 - 计算机科学课程节选