The orders came just two days after Mr. Obama was sworn-in as president in front of the largest crowd ever in Washington, D.C.

VOA: special.2009.01.24

He still incurred -C because he ran and he also has a cost of |x-y| because he doesn't like Mr. Y winning.

他同样有-C的收益因为他参加了竞选,且他还有|x-y|的成本,因为他不喜欢Y先生获胜

耶鲁公开课 - 博弈论课程节选

So we talked about Mr. Bool briefly last week in this idea of true or false, but in C, you don't have a Boolean data type.

我们上周简短地谈论过Bool先生的,真假的逻辑思想，但是在C语言里，没有布尔数据类型。

哈佛公开课 - 计算机科学课程节选