The sources are: one,the plasmid vector that we've picked, and the second is these genes that for some reason we're interested in.

第一个是我们选择的质粒载体,第二个是我们感兴趣的基因

耶鲁公开课 - 生物医学工程探索课程节选

The second assumption we're going to make which is new is that we're going to assume that candidates cannot choose their position.

我们给出的第二个假设,这个新的假设是,候选人不能选择他们的位置

耶鲁公开课 - 博弈论课程节选

So what we're doing is filling in those eight electrons following the Aufbau principle, so our first electron is 1s going to go in the 1 s, and then we have no other options for other orbitals that are at that same energy, 1s so we put the second electron in the 1 s as well.

它会是什么样子呢,我们正在做的是将这8个电子按照奥弗,堡原理进行填充,所以我们第一个电子将会进入，然后我们没有其他的,轨道的选择在同一个能级，所以我们把第二个电子也放入。

麻省理工公开课 - 化学原理课程节选

Second good piece of style here is choice of variable names.

第二个编程优秀风格就是,变量名称的选择。

麻省理工公开课 - 计算机科学及编程导论课程节选