Situation number two is I take the same number, and I make a row. They are all in one row.

状态二我将采用同样的数字，并且我做了一个箭头，它们全部都在一列上。

麻省理工公开课 - 固态化学导论课程节选

All right. So it's 7 that are in chlorine, it's the same as fluorine or any of the others in that row or in that group rather.

好，氯有七个，跟氟或者在那一列,的其它元素一样。

麻省理工公开课 - 化学原理课程节选

Same person in the last row.

最后一排,还是那位同学

耶鲁公开课 - 基础物理课程节选