I mean the crowd seems to be into it. Even just people at the bar are cheering for big shots."

VOA: special.2010.06.25

- So double bar means if this condition or this one -- and maybe even both -- are true, go down this road and execute that code.

所以复纵线意思是，如果这两个条件之一-,或者两个都--是成立的，那就继续,执行后面的代码。

哈佛公开课 - 计算机科学课程节选

Parts of it may be even at zero bar, if I go really fast.

如果我动作太快，某些部分甚至会是零巴。

麻省理工公开课 - 热力学与动力学课程节选