A role is an entity (a person, computer, or any other type of actor) or group of entities that have the same rights and obligations with respect to performing a task or a group of tasks.

角色是一个实体(人、计算机或任何其他类型的参与者)或一组实体，其具有执行某项或某组任务的相同权利和义务。

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As you can see from Listing 2, the DeferredDivision class extends from Kilim's Task type, which essentially emulates the actor model.

从清单2可以看到，deferreddivision类扩展了Kilim的task类型，后者实际上模仿了角色模型。

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An actor is someone or something outside the system that interacts with it; this can be either a person using the system or some other type of interface.

一个角色(actor)是与系统交互的外界的人或者事物；这既可以是使用系统的人，也可以是其他的接口类型。

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If the idea was to reach out to new types of consumers, they ought to have used a different type of actor.

NPR: Ad Report Card: Apple's Sour Mac Pitch

The most fortunate crowd-funding recipients, however, may be the type represented by Erik Harrison, a 31-year-old actor planning a move from Alexandria, Va.

WSJ: NYC Dreams, Funded by Friends