Like any software reading a file, the parser is built around a reading loop: a loop that progresses through the file.

和读取文件的任何软件一样，解析器也是围绕着读循环(读入文件的循环)创建的。

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The while loop (like the for loop introduced later in this article) supports three additional statements

while 循环（与本文后面介绍的 for 循环一样）支持三种附加语句

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The advantages of adding a loop are that the loop is visible, and that you can control the rate of iterations through the loop if needed.

添加一个循环的好处在于循环是可见的，并且如果需要的话您可以通过循环控制迭代的速率。

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Downtown Chicago, the city's business center, is known as the Loop.

VOA: special.2009.01.12

I've written a little for loop, which is going to iterate over all of the elements in the list.

让我们先看看这儿的代码，我已经写了一个循环语句,用来迭代处理数组中所有的元素。

麻省理工公开课 - 计算机科学及编程导论课程节选

Condition," this thing in the middle between the semicolons, is going to be checked every iteration of the loop.

条件，“这个在两个分号的中间，它将迭代地检查这个循环的条件。

哈佛公开课 - 计算机科学课程节选

When one or more input strands bind to complementary sequences on the loop, the loop breaks, activating the DNAzyme and switching the gate on.

ECONOMIST: DNA computing

There are up to a dozen possible routes, and the direct one versus the scenic one versus the loop-de-loop versus the dead end changes from person to person.

FORBES: So Reachable, We're Unreachable: The In-Box Perplex and the Content Marketer

No one yet has done a loop-the-loop, but Hawkes thinks such maneuvers will come soon, as hydrobatic pilots gain experience and confidence.

FORBES: Cruising Altitude: Minus 400 Feet