These test cases are useful for evaluating a product against its functional requirements.

对于根据功能需求评价产品来说，这些测试用例是有用的。

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This dual scale is translated by the construction of a building that fulfils both its urban and symbolic dimensions while also meeting its functional requirements.

将这种双重的尺度转译到建筑上来，造就了一座既满足城市和象征意义维度的，又符合功能要求的建筑。

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Indeed, while the internal structure of the code that comprises the application is incommodious to change and difficult to trace, externally the system may fulfill its functional requirements well.

必须承认，当组成程序的代码的内部结构不适应更改，或者很难追踪时，在外部系统可能还会很好的履行它的职责。

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