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

You could do one of these little boxes they do in sociology or political science, and have these arrows running all over the place.

你可以把这些画成图示,像在社会学和政治学课上那样,把箭头画得到处都是

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