If you do use-case driven development, a usage scenario is typically an instance of a complete use case scenario, or a portion of the use case scenario.

如果你确实执行了用例驱动式开发，那么使用场景就是一个典型的完整用例情景的实例，或者用例情景的一部分。

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To their credit, the authors applied best practices -- use-case driven development, focusing on architecture, frequent testing, and iterative development -- to offset many of these project risks.

作者应用最佳实践--用例驱动开发，关注架构、持续测试和迭代开发--来抵销一些项目风险。

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But generally, this type of information, and thus the related test cases, should be generated later in the development process than is done with those tests driven by a use case.

但是一般说来，这种类型的信息，以及这样有关联的测试用例，开发过程中信息的生成应该晚于由那些测试用例驱动的生成的。

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