没有人确切地知道它是什么时候或者为什么开始成为和平的象征。

No one knows for sure when or why it began to symbolize peace.

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或者为什么你的导航软件把你领到了小巷而不是高速公路上？

Or why your navigation app took you on the side street instead of the highway?

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想一下，为什么他们是独特的，或者为什么他们会令人讨厌。

Consider why they're unique or annoying.

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That's why your operating systems and your personal computers often crash for no apparent reason. Just because two things happen to, once in a while, occur at the same time.

这就是为什么你的电脑或者操作系统,经常会毫无预兆的崩溃了,这是因为两件事情正好同时发生了，通常还有人工输入。

麻省理工公开课 - 计算机科学及编程导论课程节选

But Eudora Welty was once asked why Southerners can be such great writers, or such good storytellers and she was a wonderful storyteller.

但有一次她被问到,为什么南方总是出伟大的作家,或者是杰出的小说家,她自己就是个很出色的小说家

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And that's basically the process of ascertaining why the program is not working.

这其实是一个查明为什么程序,不运行或者不按期待中运行的过程。

麻省理工公开课 - 计算机科学及编程导论课程节选