One visitor,a former Navy man,once said: "The only good thing about my fighting in the war was that I was too young to be terrified."

VOA: special.2009.05.25

Once each time. Right? I only do one swap potentially, it-- though not one potentially, each time at the end of the loop I do a swap.

每次循环做一次，对么？我其实,就可能做了一次交换，也许并不是可能，每次循环的结束我都得做一次交换。

麻省理工公开课 - 计算机科学及编程导论课程节选

One, two, three, four, so on each level of the picture I'm drawing, I've seem only to be looking at each number once.

，2，3，4，可见，在我画的,这幅图的每一层上，对每个数字,都只会用到一次。

哈佛公开课 - 计算机科学课程节选

Pretty much I think about it only once a year, when I'm giving this very lecture.

最多是一年想一次，当我要上这节课时。

耶鲁公开课 - 死亡课程节选

On the other hand, am I likely to only search a list once? Probably not. There are going to be multiple elements I'm going to be looking for, so that suggests that in fact, I want to amortize the cost.

我可能就搜索一次么？,可能不是，可能我要找好多个元素,这样的情况下,我们就能分摊开销了，这告诉我们什么？这意味着。

麻省理工公开课 - 计算机科学及编程导论课程节选

So in other words, every time I merge the point that I kept emphasizing verbally there and that I'm only touching each number once, means that we have to account for the amount of time it takes to merge N which is going to be just N. Now, this is again one of these cyclical answers.

换言之，之前在做合并时,我不停地强调,对每个数字我只碰了一次，这就是说,我们要记录合并所花的时间量,也就是这里的,这又是一种循环性的答案。

哈佛公开课 - 计算机科学课程节选