一个用于显示关键性能指示器的仪表板，比如输入和输出吞吐量，在等待和处理中的请求数量，以及平均的等待和处理时间。
A dashboard must display key performance indicators such as the input and output throughputs, number of requests waiting and in process, and average waiting and processing times.
图表显示人们在手机上阅读的四个关键时间点。
It tells you people reading on mobile phones are reading at four key times.
它显示关于业务服务使用情况的关键信息，比如使用量、单位成本、成本修饰符和某一时间段内的总成本。
It displays key details about the usage of a business service such as its volume, cost per unit, cost modifier, and the total cost in a particular period.
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