在分析阶段，您可能愿意将详细信息排除在条件表达式以外，而在设计阶段，您却可能希望将最终产品中要使用的代码的片段包括在条件表达式中。
In analysis, you might be content to leave the details out of your conditional expressions, whereas in design you might go so far as to include snippets of the code to be used in the end product.
目前发表的文章大多是对布齿设计原则作了详细说明，而在如何实现方面没有进一步探讨。
The present published articles describe mostly the design principle of cutters' distribution in detail, but do not further discuss how to realize the design.
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