抽象是问题在某些概括层次上的描述，它使得我们将注意力集中于问题的关键方面而不至于陷于细节的泥潭之中。
An abstraction is a description of the problem at some level of generalization that allows us to concentrate on the key aspects of the problem without getting Mired in the details.
当你对潜在可重用资产的疑问多于答案时，不要急着概括、增加抽象层次或产品差异性。
When you have more questions than answers about a potential reusable asset - resist the urge to generalize, add layers of abstraction or product variability.
该表示在最高的抽象层次上展示了角色和过程之间的关系，这适用于概括了解业务过程。
This representation shows the relationship between roles and processes at a high level of abstraction, which is suitable for getting an overview of a business process.
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