We've got wind, we've got a primeval chaotic, Watery mass or deep, and then surprise, There's just a word,"Let there be light."

我们有了气流，有了原始的混乱，狂放的水流，混沌，但奇怪的是，只有一句话，“要有光“

耶鲁公开课 - 旧约导论课程节选

And we don't put the mass of the electrons because they are so light in comparison.

我们不能得到电子的质量,因为它们相较起来太轻了。

麻省理工公开课 - 固态化学导论课程节选

They are very light, that is to say, low mass.

很轻，也就是说，质量很小。

麻省理工公开课 - 固态化学导论课程节选

We give you a very rich table of constants that's got all kinds of things from the mass of the electron to the speed of light, and all this stuff to the requisite number of significant figures. And, in addition, you are allowed to take in one sheet of paper, 8 1/2 x 11 one sheet 8 1/2 x 11, you can write anything you want on it.

我们会给你一个很详实的常量表,将会涉及很多方面，从元素的电子,到光速，这些内容到有效数字的定量,还有，你们可以带来一张纸，纸的规格是，可以写任何你们想写的东西。

麻省理工公开课 - 固态化学导论课程节选