Selector 类将传入客户机请求多路分用并将它们分派到各自的请求处理程序。
It demultiplexes incoming client requests and dispatches them to their respective request handlers.
然而，在调用特定的服务之前，服务器应用程序必须将每个传入请求多路分用并分派到各自相应的服务提供者。
Before invoking a specific service, however, the server application must demultiplex and dispatch each incoming request to its corresponding service provider.
然而，在调用特定的服务之前，服务器应用程序必须将每个传入请求多路分用并分派到各自相应的服务提供者。
Before invoking a specific service, however, the server application must demultiplex and dispatch each incoming request to its corresponding service provider.
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