这些沙子和碎石被用作建筑中的骨料。

The sand and gravel are used as ___aggregates in construction.

这些统计数据是所有城市数据的汇总。

These statistics are the ___aggregates of data from all cities.

这份报告汇总了来自不同部门的数据。

This report ___aggregates data from different departments.