- 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

And yet the unemployment never came down below double digits for the entire decade.

但是失业率,从来没降到两位数以下,整个30年代都这样。

斯坦福公开课 - 经济学课程节选

The result of this process if this replication went down the whole length of the DNA would be to form two identical, double stranded DNA molecules.

如果复制过程在整条链上持续进行的话,将生成两条完全一样的,双链DNA分子

耶鲁公开课 - 生物医学工程探索课程节选

That tells you something about the physical chemistry of the molecule; that it's these hydrogen bonds that hold the double strands and I can break those down under certain conditions.

我们从中可以知道一些,DNA分子的理化特点,双链是由氢键连接在一起,在一定条件下这些氢键可以断裂

耶鲁公开课 - 生物医学工程探索课程节选