That is to say I can now reroute that sodium plus chlorine reaction and go a different way, but I still end up with the same change in energy.

也就是说，我可以重新定义一种,钠与氯的反应途径,从另一种途径来实现反应，但是能量的变化过程相同。

麻省理工公开课 - 固态化学导论课程节选

The fact that when you go in a circle, you accelerate is what we're learning here, coming from the fact that velocity is a vector and its change can be due to change in the magnitude or change in direction.

而当你做圆周运动时你也在加速,这是我们在这里所学到的,原因就在于,速度是一个矢量,其变化可以通过改变模长,或者方向来实现

耶鲁公开课 - 基础物理课程节选

Things are moving and changing ; without the whole page reloading; when we looked towards the end of the semester Ajax enabled websites much like the ones we all use today.

不用重新更换页面,因为页面上的东西一直在变化;,在学期即将结束时我们会学习如何实现这些动态的东西,还有Ajax对于浏览器兼容性的贡献。

哈佛公开课 - 计算机科学课程节选