服务方式仍旧是被动服务。

The service mode was still the passive mode.

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应主动传递信息给读者，改变图书馆被动服务的状态。

And we should actively transmit messages to readers. Change the state of passive service in library.

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如果活动服务器失败，您的业务服务将迅速切换到被动服务器，如图5所示。

If the active server fails, your business services will be quickly switched to the passive server, as shown in figure 5.

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