If you've ever been using some program, you did something completely innocuous, pull something down from a menu, click a button, you didn't do anything wrong and yet all of a sudden the thing just starts hanging there or you get a little spinning beach ball or the hour glass or whatever it is.

如果你之前在用一些程序，做一些无伤大雅的事情，拉下一个菜单，点击一个按钮，你没有做任何错误的事情,突然间有东西开始一直运行,或者一个沙滩上的小球旋转,或滴漏或是别的什么。

哈佛公开课 - 计算机科学课程节选

Where is the button that just says click here to do the most common case?

哪里有一个按钮，当你点击它的时候,它可以处理最通常的情况？

哈佛公开课 - 计算机科学课程节选

Down here is a button called Courseware.

下面这个是一个叫课件的按钮。

麻省理工公开课 - 固态化学导论课程节选

so the kind of experiment that we did, let's imagine your mind-magnet you are sitting there, you are looking through little parscope that the screen you can respond with a button press.

我们做的那种试验，让我们想象一下思维磁场,你坐在那里，你在看一个小的示波器的屏幕,你可以以按按钮作为回应。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Frankly, I would argue that probably 80%, 90% of the users of Boston Subway just want to buy one damn ticket to get on the subway and yet where is the button that says one-way pass?

坦白讲，我想提出，可能80%，90%的波士顿地铁用户,只想买一张TM的地铁票,来乘坐地铁，但是哪里有一个按钮,指明：“一路通“？

哈佛公开课 - 计算机科学课程节选