sar命令是一个记帐系统，它可以提供整个系统活动的统计信息。
The SAR command is an accounting system that provides statistics of the entire system activity.
本文就已实现的一下邮件记帐系统分析一个邮件记帐系统的设计方法和思路。
This article analyses the design method and the thread of thought about the EMAIL account system based ona realized EMAIL account system.
这就是catch块中包含对eis1事务的调用的原因，为了取消对订单和记帐系统的更新。
This is why the catch block contains calls to EIS1 transactions that cancel updates to the order and billing systems.
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