平均每天有针对3 167.2个问题的查询量，中等活跃用户平均每月针对3.1个问题进行查询。
Average query volume was 3, 167.2 questions per day, with the median active user asking 3.1 questions per month.
“量日而出”的程序象一个个人查询帐户，设定一个初始平衡状态，或称其为预算指标，确保每月支出不超预算。
The program works almost like a personal checking account, where a beginning balance or budget is set and the monthly expenditures under each account cannot exceed the budget.
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