But they knew, statistically, that the average roll, if people reported honestly, should have been 3.5.

但他们知道，依照统计学规律，如果所有人都能做到如实上报点数，那么这次实验的平均掷出点数应为3.5。

youdao

To make sure that the average roll equals the average value, an additional smaller die will be used in the calculation.

为了两者的保证平均值相等，会在计算中附加一个较小的骰子。

youdao

For example, all JDBC calls in any object type roll up to the database level to summarize the average elapsed time and volume of requests for all calls to the database.

例如，任何对象类型中的全部JDBC调用都上升到数据库级别，从而为所有的数据库调用汇总平均运行时间和请求量。

youdao

Big items will have to go elsewhere--7-Eleven stores average only 2, 600 square feet, after all--and it will take at least a year to roll out this network nationwide.

FORBES: I Got It @7-Eleven