这个例子有一个按钮和一个行编辑组件。

The example has a button and a line edit widget.

youdao

每一组有一个按钮来控制。

Each grouping is controlled by a button.

youdao

你可以看到，我们有一个按钮，调用一个函数。

As you can see, we have a button that calls a function.

youdao

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

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