A deeper and longer-lasting impression of a message was formed when delivered in a letter, as opposed to receiving the same message online.

与线上接收信息不同的是，人们在写信时对同样的信息的印象会更深刻、更持久。

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It gets to be cumbersome to try to scroll back to find out what a person said, especially when several people are on online almost at the same time, each one competing for time to write a message.

如果试图回滚以查找某个人的消息的内容，这种方式就会显得十分笨拙，特别是当几个人几乎同时在线，并且每个人都在抢时间编写消息的时候，这个问题就更为突出。

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Similarly, messages destined for client applications are held in server-side message queues and then sent to the client applications when the device is back online.

同样，要发送给客户机应用程序的消息被保存在服务器端消息队列中，当设备恢复在线状态时，将这些消息发送给客户机应用程序。

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