"Other social networking tools make selective sharing within small groups difficult," she added, taking what appears to be a jab at Facebook's recent grouping function.

“其他的社交网络工具都很难在小群体里进行分别分享”，针对“脸谱”最近的群组功能，她补充道。

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Like the counting function, when several aggregations with grouping keys are used in a rule, the group and count operations must be cascaded as shown in figure 14.

与计数函数类似，当在一个规则中使用多个具有分组关键字的聚合，对分组与计数操作必须进行级联，如图14所示。

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For this new function, additional fields in message descriptor were needed to keep information for the segmenting and grouping.

对于该新功能，需要在消息描述符中附加字段来保留分段和分组信息。

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