And I'm going to get minus 2, which came from here: minus 2 and that is in fact negative, which is what I wanted to know.

最后只剩下-2了,2是一个负数,这正是我想要的

耶鲁公开课 - 博弈论课程节选

% Some people, the next most popular answer with 5%, which is a nice low number, wanted to put two in the 2 p x before they moved on.

下一个更多的选择占了,是一个比较低的数字，想要将两个电子在移动之前放入2px轨道,记住在我们双倍填充之前。

麻省理工公开课 - 化学原理课程节选