您需要为每个需求类别中的变化做出计划。

You need to plan for change in each requirement category.

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对于应用程序架构师来说，另一个重要技能是，具有为特定的需求(删除细节，并将其映射为更普通的问题类别)创建抽象的能力。

Another critical skill for application architects is the ability to create abstractions around the particular requirements that remove specifics and map to a more generic class of problems.

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这会产生与下图相似的术语表结构，其中有一个类别包含与联系首选项相关的术语，以及用来定义这项需求的所有方面的术语。

This results in a glossary structure similar to that shown below, with a category containing terms relating to contact preferences and terms defined for each aspect of that requirement.

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