c We know it's very specific for light because in this equation is c, the speed of light. So any time you go to use this equation, if you're trying to use it for an electron, just ask yourself first, does an electron travel at the speed of light?

我们知道它只对光适用是因为在这个方程里有,光速，所以下次你们用这个方程前，如果你们要把它用到一个电子上，先问问你自己，电子的运动速度是光速吗？

麻省理工公开课 - 化学原理课程节选

The first question you need to ask yourself is why do you want, or why are you thinking about taking this course?

各位需要问自己的第一个问题是，为什么要，为什么想研读这门课程？

耶鲁公开课 - 新约课程节选

People tend not to realize that the first question you should always ask yourself, is this really just something that's well-known in disguise?

已解决问题呢？,这是一个最短路径问题吗？,这是一个最近邻居问题吗？

麻省理工公开课 - 计算机科学及编程导论课程节选

Now The Wasteland was the first poem to have footnotes, and you have to ask yourself: what do you have to think the poem is in order to think that it needs footnotes?

荒原》是第一首有脚注的诗歌，所以你们需要问问自己：,这首诗究竟有什么特别,而使得它必须要有脚注呢？

耶鲁公开课 - 1945年后的美国小说课程节选