If that logic embodies true business value, however, then you'll want to test it, in which case you'll get to see the Extract Method pattern at work.
但是，如果逻辑中包含真实的业务值，就会想到测试它，这个时候就可以看到提取方法模式的作用了。
The tried-and-true technique of extract, transform, and load, or ETL, is one way to manage this.
行之有效的提取、转换和加载或etl技术是管理这个的一种方式。
The working effect of analog software is true to actual machine, it can operate simple program, and extract the point coordinate index.
开发出的软件运行结果与实际机构动作逼真，而且能够以简单程序操作，求出所需点的坐标值。
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