Look at the last two lines: "But that two-handed engine at the door stands ready to smite once, and smite no more."

看一下最后两行：,“然门边的双手引擎“,整装待发着发出毁灭性的打击“

耶鲁公开课 - 弥尔顿课程节选

There are no less than twenty pages devoted to the critical debate on these two lines: what the hell Saint Peter's two-handed engine is, what it looks like, what it does, what -- and everything about it.

集中描写这两行里的争论的,不少于20页：,圣彼得的双手引擎到底是什么，长什么样，用来干什么-和关于它的所有所有。

耶鲁公开课 - 弥尔顿课程节选

That's just the those-- let me use my pointer that's just these two lines here. I checked the value, and in one case, I'm changing the last to be mid minus 1, which is the case I'm in here and I just call again. All right?

来看看ppt，这里有两条线,我检查了值，在一种情况下,我把last指向了中点减一,就是这种情况,我们再来调用一下怎么样？

麻省理工公开课 - 计算机科学及编程导论课程节选