可能有些情况，您想要对根据特定的列值分割的记录集进行一些计算，但是不希望在报表中打印该列。

There may be scenarios where you would like to do some computations on sets of records broken based on particular column values, but would not like to print that column in the report.

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这个主意是根据计算标准过滤消息——像来自你的同事，或你经常聊天的一些人。

The idea is to filter messages according to computed criteria - like those from your work colleagues, or from people you communicate with most often.

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首先，计算机只是将一些部件安装在一起，这些部件是根据行业标准来进行设计的，因此他们很容易被集中在一起，从而形成计算机系统。

First of all, the computer is installed with a number of components, which are designed according to industry standards, so they can easily be brought together to form the computer system.

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