通常，应用程序可以通过多个连接端口用相关事件处理程序创建事件过滤器。
Generally, an application can create event filters with associated event handlers through multiple connection ports.
通常，应用程序可以通过多个连接端口用相关事件处理程序创建事件过滤器。
Generally, an application can create event filters with associated event handlers through multiple connection ports.
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