按照例子的要求，聚集信息需要保存目前为止所有（该组）传入值的加权和，并保存已经处理过的数值的数量。

Referring to our example, the aggregation information needs to contain the weighted sum of all values passed in so far (for that group) and the count for the number of values already processed.

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数值效应是明显的：退化地区的鲑鱼数量比原始地区少；然而，栖息地的丧失也有可能减少遗传多样性。

The numerical effect is obvious: there are fewer salmon in degraded regions than in pristine ones; however, habitat loss also has the potential to reduce genetic diversity.

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在数值幅度估计中发现的那些维度的指数可预测在数量级产生中发现的指数。

The exponents of those dimensions found in numerical magnitude estimation predict the exponents found in magnitude production.

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