可是，也有一些忧虑是出自一些使用数字9999标记文件结束的数字系统。
But there were also worries because some data systems used the digits 9999 to mark the end of a file.
你花了一天的时间整理文件，但是到一天结束，你还没有完成任何你计划要做的真正重要的事情。
You spend a day putting out files, but by the end of the day, you haven't accomplished any of the really important things you set out to do.
此模式支持提供包含间隔事务结束的批处理文件处理需求。
This pattern supports the need to provide processing of batch files containing end of interval transactions.
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