此模式对转换器和路由器模式进行了扩展，支持备选服务提供者（使用不同的接口提供语义等效的服务）概念。
This pattern extends both the translator and router patterns and supports the concept of alternate service providers who offer semantically equivalent services with differing interfaces.
此模式对转换器和路由器模式进行了扩展，支持备选服务提供者（使用不同的接口提供语义等效的服务）概念。
This pattern extends both the translator and router patterns and supports the concept of alternate service providers who offer semantically equivalent services with differing interfaces.
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