To gather into a round mass.

聚成一团。

To cluster together.

聚集。

Massed together.

集合成块的。

Composed of miscellaneous matter adhering together.

各种东西聚集而成的。

A mass of varied materials or elements.

集成物；聚合物；团；块。

A rock composed of pebbles, gravel, etc. cemented together.

【地】砾岩。

Company formed by merger with or acquisition of several companies in widely different industries.

企业集团。