Conversely, the same code is used to produce alerts when a no-precipitation window has opened, giving you a handy notice of when it's time to dash inside from your car.

反过来，这些代码也能提供无降水警报，便捷地通知您：可以从车里走出来了。

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For example, a postal code in the United States is a five-digit number, optionally followed by a dash and a four-digit number. Listing 1 shows the regular expression that describes that format.

例如，在美国邮政编码是一个五位数，后面还可能跟有一个破折号加一个四位数。

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Make was the tool of choice for scripting and managing code compilation. Sprinkle in a dash of batch files or shell scripts to add automation and you had a build process.

要描述并管理代码的编译过程，可供选择的工具就是make，再加上零星几个批处理文件或是shell脚本以增加自动化程度，您的构建过程也就这样了。

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