Return a single instance of an aggregation object.
返回聚合对象的单一实例。
The aggregation is a count of members.
聚合是成员的计数。
The aggregation growth is main way of the crystal growth of zeolite A.
聚合生长是A型沸石晶粒长大的主要方式。
The people are a sea of wisdom and the aggregation of strength.
人民是智慧的海洋，力量的总汇。
An aggregation operation computes a single value from a collection of values.
聚合运算从值集合计算单个值。
Second, a lot of scholars study talent aggregation only by qualitative analysis.
第二部分，人才集聚与城市化水平互动关系的理论分析。
Second, a lot of scholars study talent aggregation only by qualitative analysis.
第二部分，人才集聚与城市化水平互动关系的理论分析。
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