The newspaper published the single drawing once each week.

VOA: special.2009.10.25

So, in this case, we're just drawing the molecular orbital diagram for the valence electrons, so we have three for each.

所以在这个例子里面，我们只需要画出,价电子的分子轨道图，所以每个有3个电子。

麻省理工公开课 - 化学原理课程节选

And the trend always is that the probability gets smaller with each of the peaks as you're drawing them.

当你画它们的时候,整体趋势总是每个峰概率越来越小。

麻省理工公开课 - 化学原理课程节选

One, two, three, four, so on each level of the picture I'm drawing, I've seem only to be looking at each number once.

，2，3，4，可见，在我画的,这幅图的每一层上，对每个数字,都只会用到一次。

哈佛公开课 - 计算机科学课程节选