A special case of a composite role is where a business object can only be uniquely identified when combining its key attribute with its parent's key attribute.

组合角色一个特殊情况是，业务对象只能通过将其键属性与父级的键属性进行组合来唯一标识。

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The DITA topic map plays the role of a use case model.

DITA 主题图扮演用例模型的角色。

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Consider a hypothetical case of how this plays a role in effective governance and decision making.

可以考虑一个有关这如何在有效的治理和决策制定中发挥作用的假想案例。

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Populations and media throughout the region keenly followed the exercise, which also allowed for an evaluation of evacuation plans and the role of the private sector in the case of a catastrophe.

UNESCO: EDUCATION

According to CNN-IBN, Karkare was credited with solving bombing cases in Thane, Vashi and Panvel and played a key role in cracking the case of the September 29 blast in Malegaon, which reportedly killed six people.

CNN: Colleagues: Slain terror chief 'superb,' a 'daredevil'

Historians and sociologists of science have made a convincing case that language plays a crucial role in the production of knowledge about the natural world.

FORBES: In Search Of Better Cybersecurity Language