If you're writing a one line function, whose sole purpose in life is addition, and, clearly, this is about addition, well, then it's, in fact, A reasonable to use a shorter symbol like A, but I do have to specify it's type.

如果你在写一个一行的函数，它唯一的目的是,做加法，显然这是关于加法的，好的，实际上，用一个短的标识符是合理的，像，但是我必须指明它的类型。

哈佛公开课 - 计算机科学课程节选

Because you won't want to do everything from scratch yourself, you want to be able to look at what is being created by somebody else and understand what is inside of there, whether it works correctly and how you can build on it This is one of the few places where plagiarism is an OK thing.

因为你们不会想无论做什么事情,都由你们自己亲自上阵，你们希望有能力读懂,别人创造的语言,并了解其中的内涵，运转的正确性和如何在其基础之上继续发展,这是为数不多的,合理的作弊行为之一。

麻省理工公开课 - 计算机科学及编程导论课程节选

This should make sense because if something has a low ionization energy, that means it's not very electronegative, which means it's going to be a lot happier giving up electron density, which is essentially what you're doing -- when you're forming covalent bonds is you're sharing some of your electron density.

这应该是合理的,因为如果某物的电离能很低，这也就意味着它的电负性也不高，那么它就会更愿意,放弃一定的电子密度，而本质上这正是你在,形成共价键时所需要做的,分享你的一些电子密度。

麻省理工公开课 - 化学原理课程节选

And the answer that strikes me as most plausible is, it's the very fact that there's a significant chance of death that helps explain why people do this.

让我觉得最似乎合理的答案是，正是有很大的死亡的可能性这个事实,解释了为什么人们这么做。

耶鲁公开课 - 死亡课程节选

If you pay me ten thousand dollars a month to work for you, I'll work for you and I'll think "I'm doing it for ten thousand dollars a month, that makes a lot of sense," but if I do it for nothing then I have to ask myself, "Why am I doing it?"

如果你一个月给我一万美元帮你工作，我会为你工作，但我会想,”我是为了一万美元才做的，这样更合理“,但如果我一点报酬都没有，那我就会问我自己，”我为什么要做这份工作？”

耶鲁公开课 - 心理学导论课程节选