一个业务组件可以通过定义自己的角色域角色，参与这个基于角色的方法。

A business component can take part in this role-based approach by defining its own roles, domain roles.

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不过，世界银行通过增长极、经济特区、价值链和其它方法，在全世界参与了很多旨在消除这些制约因素的单独项目。

The Bank is involved, however, in many isolated projects across the world to address these constraints – through growth poles, Special Economic Zones, value chains and other approaches.

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最简单的方法是让参与者通过中央服务注册其 FOAF 文件的 URL，然后中央服务执行聚集。

The simplest way is to have participants register the URL of their FOAF file with a central service, which then does the aggregation.

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