Listing 5 USES both Ruby code and expressions. Notice the text in the body of the do loop.

清单5使用了Ruby代码和表达式。

youdao

What's the first thing I do in a loop?

我在循环中做的第一件事情是什么呢？

youdao

The reasonable approach is to do the basic flow once, do a loop once, and then do a loop a second time.

最合理的方法是做一遍基本流程，一遍循环流程，然后再做一遍循环流程。

youdao

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

Well I ought to be able to do that by simply generalizing the loop. And that's what the next piece of code on your a hand out shows you.

好的通过生成这个循环,我应该能够达到目的,这也是你们的讲义中下一段代码。

麻省理工公开课 - 计算机科学及编程导论课程节选

So what I wanted to do is loop back, at least with a couple of things that we see recurring and very understandably so, but let's try to clear up a couple of frequently occurring issues.

所以我想要做的是回环，至少用两三个,我们看到的东西返回，并且可以理解地，让我们试着处理几个,频繁发生的事情。

哈佛公开课 - 计算机科学课程节选

It should be noted also that the agencies, their industrial partners and a number of "space tourism" advocates have all previously thought about repeating the Apollo 8 Moon mission, if only to do one simple loop around the back.

BBC: Manned flight around Moon considered

Occasionally Facebook will do something greedy and stupid like the recent Instant Personalization feature, and they may not tend to rush to keep users in the loop when they do.

FORBES: You have no privacy on Facebook. Get over it.

If Foursquare can subtly create brand associations and social media product placement in a non-obtrusive way, it may stand a chance, but to do so requires an OODA loop running at a much faster pace with a more diverse view of the marketplace.

FORBES: Is Foursquare's Bubble About To Burst?