One technique that is often now performed by the compiler is loop unrolling.

现代编译器常常采用的一种技术是展开循环。

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A standard optimization is loop unrolling; the compiler will unroll the loops to reduce the number of branches.

标准的优化是循环展开；编译器将展开循环，以减少分支的数量。

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What we have to do is loop until we have less than ten results or until there is an error. The loop looks like this!

我们需要使用一个循环进行遍历，直到所返回的结果少于10个或出现错误为止。

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

VOA: special.2009.01.12

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。

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So I take 2 plus 3 b steps to go through this loop OK. So if b is 300, it takes 902 steps.

好，如果b是300的话就是902步,如果b是3000那就有9002步。

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What is inside the loop is downtown and what is outside is residential.

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If a device goes out of range while a track is being played an emergency loop is created so there is no break in the music.

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The crash happened two thirds up the headland where there is a loop to let the trams pass one another.

BBC: Tram collision injures 17 passengers