"So it's certainly not going to be with us in anything less than three years, and I think it's more likely that we're in a five to ten year time frame."

VOA: standard.2010.07.21

It's happened over the course of millions of years of human evolution, but it's happened also in a relatively recent time frame when we think about the American diet and what people are eating, but also the world diet of course.

它们发生在人类数百万年的演化历程中,在近现代,当我们考虑美国人的食谱,当然也包括全世界的食谱,同样在发生着这些变革

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So, just, if you can take what I'm saying for a moment right now that in fact this should collapse in this very small time frame, we have to see that there's a problem with one of these two things, either the Coulomb force law or Newtonian mechanics. So, what do you guys think is probably the issue here?

所以如果你们考虑我,开始说的这个塌缩应该,发生在很短的时间里，那么这两者之一就有问题,要么是库伦定律,要么是牛顿力学,你们觉得应该是哪个的问题？

麻省理工公开课 - 化学原理课程节选