一旦订阅了主题，就将根据此主题发布的所有消息发送到订阅服务器。

Once subscribed to a topic, all messages that are published on that topic will be sent to the subscriber.

youdao

在服务器上，订阅和事件处理对系统定义的事件是一样的。

On the server, the subscription and event handling are the same as for system-defined events.

youdao

完成连接后，大多数订阅服务器都选择一个或多个要订阅的主题。

Upon connecting, most subscribers select one or more topics to subscribe to.

youdao