本系列的第1部分介绍了多实例队列管理器和多实例代理的一些基础知识，描述了“主动-被动”高可用性技术和水平集群。

Part 1 in this article series covered the basics of multi-instance queue managers and multi-instance brokers, and described the active-passive technique of high availability and horizontal clustering.

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非消费活动是主动的，而不是被动的。

Non-consuming activities are active, not passive.

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聆听是一种主动的，而非被动的行为，它包含听到、领会和记住。

Listening is an active, not a passive behaviour, which consists of hearing understanding and remembering.

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Active note-taking is opposed to passive note-taking for two reasons.

主动笔记与被动笔记有两方面不同。

哈佛公开课 - 幸福课课程节选