They dynamically switch their role from internal to external, and vice versa, in response to changes in the organizational control of resources and activities of consumption service.
它们动态地将其角色从内部切换到外部，或反之亦然，以响应使用服务的资源和活动的组织控制更改。
Specifying that a process in role mgr_r may switch to a valid context in role cashier_r. But there is no line.
指定角色mgr_r中的进程可以切换到角色cashier_r中的有效上下文。
The virtual infrastructure provider manages the hypervisors and V switch or equivalent; his role, by all accounts, is outside the tenant's scope of concern as well.
虚拟技术供应商管理虚拟层程序及虚拟交换机等此类技术支持；他的工作内容，总的来说，也不在租户的关注范围之内。
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