Therefore it is prudent to combine subscription to alert messages with polling of status information, to provide a robust mechanism for communicating with monitoring tools.

因此明智的做法是将警报消息的订阅与状态信息轮询相结合，提供一个健壮的与监控工具通讯的机制。

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These actions require a combination of DataPower SNMP Trap Event Subscription configuration and configuration of the SNMP monitoring agent in polling and potentially based on returned status values.

这些活动需要在轮询中结合使用DataPower SNMP Trap Event Subscription配置和SNMP监控代理配置，并且很可能基于返回的状态值。

youdao

The Bloglines API uses basic HTTP operations to retrieve current status information about a user's blogroll and subscription resources.

Bloglines API 使用基本 HTTP 操作来检索关于用户的 blogroll 和订阅资源的当前状态信息。

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Then you have the thousands of videos that all consumers have to pay to rent, regardless of their subscription status.

FORBES: Why Are Amazon's Streaming Video Announcements Always So Lame?