每个字符都是一个开或关的设定。

Each character is an off or on setting.

youdao

火箭发动机给汽车提供大量的动力，但是操作它只是开或关。

The rocket gives the car plenty of power, but it is either on or off.

youdao

实现依赖于选项的二进制状态(开或关)。

The implementation relies on a binary state of the option (on or off).

youdao

You can go on or you can go off and actually, how about some gratuitous use of technology?

你可以自由的开或者关，你认为这种有必要使用这种技术么？

哈佛公开课 - 计算机科学课程节选

But at the end of the day, and here's why we just went with binary and not decimal years ago, when you have one implement a computer with a physical device, it's actually really easy to represent the notion of on or off.

但是最终，之前我们采用二进制,而不是十进制，主要是因为当我们用一台实体机器运行计算机时，这实际上很容易用开或者关的概念来表示。

哈佛公开课 - 计算机科学课程节选