I could see that the word w-a-t-e-r meant something wonderful and cool that flowed over her hand.

VOA: special.2009.11.08

And we can simplify this expression as saying negative e squared over 4 pi, epsilon nought r squared. Epsilon nought is a constant, it's something you might see in physics as well.

也会遇到它,在这里，你可以就把它,理解为一个转换系数,我们需要做的。

麻省理工公开课 - 化学原理课程节选

You need a substance and then that substance has to have a property that changes depending on the heat flow, i.e., depending on whether it's sensing that it's the same temperature or different temperature than something else.

你需要某种物质,它的某种性质,随着热量的流动而改变，也就是说,依赖于它是否感觉到它,与其他的物体处于相同的温度。

麻省理工公开课 - 热力学与动力学课程节选

If you start to look at food labels more carefully, what you'll find is some version of sugar, and if you find ose, o-s-e at the end of something, that means it's a sugar.

如果你更仔细地看看食品标签,你会找到许多类型的糖,如果你找到词缀"ose",以ose结尾的单词,那说明这是糖类

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选