This explicit identification makes it easier for processes to keep track of complex mappings.
明确的标识更便于跟踪处理复杂的映射。
A request message can be processed by any of multiple providers without explicit identification of the provider by the requester.
请求消息可由多个提供程序中的任何一个进行处理，请求程序不必显式地确定提供程序。
A request message can be processed by any of multiple providers without explicit identification of the provider by the requester.
请求消息可由多个提供程序中的任何一个进行处理，请求程序不必显式地确定提供程序。
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