特性可以将此需求精化为："系统应当使用一个关系数据库"。
The feature can refine this requirement to be: "System should use a relational database".
在精化阶段，我会建议将概念模型中的业务实体映射到遗留系统中的源数据库。
During the Elaboration phase I would suggest mapping business entities within the conceptual model to the source databases within the legacy systems.
这个7人组成的团队聚精阅读选举法，分析区域地图，并建立了各省选民情况的庞大的数据库。
A team of seven pored over the election law, dissected district maps, and built an extensive database of voters in every province.
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