员工不需要固定电话线也能完成这项工作，这就节省了更多的效能。
That staff can do this without needing a fixed telephone line provides even more efficiency savings.
待办事项：代码实现是一组要在固定时间范围内完成的优先任务。
Backlog: a backlog is a set of prioritized tasks to be completed in a fixed timeframe.
就我的经验而言，我发现即使是那些不确定性的操作，在大多数条件下基本上也能在固定的时间内完成。
In my experience I have found that even the non-deterministic operations will complete in almost constant amount of time under most conditions.
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