In the requirement analysis phase, the article briefly introduced the concept of requirement analysis, discussed two main requirement analysis technologies - use case model and domain model.
在需求分析部分，简要介绍了需求分析的概念，讨论了两种主要的需求分析技术——用例模型和领域模型。
Building object-oriented domain models is a good way to resolve this problem, but traditional analysis and design method could not ensure consistency between requirement and model.
面向对象的领域模型是解决这个问题的好办法，但传统的分析和设计方法无法确保真实需求和领域模型的统一性，容易造成需求和模型的错位。
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