In Scratch, the block you may have used for this idea literally says "or" for or; in C, two vertical bars.

在Scratch中，这个你用的程序块,照字面地想法来说“or“表示或者;,在C语言中，是两个竖线。

哈佛公开课 - 计算机科学课程节选

On the vertical axis I'll put two vertical axes in, just for the sake of things on the vertical axis I'll put my expected payoffs.

坐标系的纵轴,由于种种原因,我花了两个纵轴,纵轴表示我的预期收益

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