基于这种背景，提出了基于可扩展消息在线协议的跨协议的企业分布式即时通信系统的概念。
Under such background, this paper presented the concept of enterprise instant messaging system of cross-protocol which was based on Extensible Messaging and Presence Protocol(XMPP).
通过追踪人们的电子邮件和在线帖子，科学家发现好消息比灾难和悲伤的故事传播得更快更远。
By tracking people's e-mails and online posts, scientists have found that good news can spread faster and farther than disasters and sob stories.
按照这种方式，如果消费者不在线，消息也不会丢失。
This way, if the consumer's not available, the message isn't lost.
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