set of sets

• n. 集的集

set of sets的用法和样例：

例句

用作名词 (n.)

1. A water sample can be regarded as an assemblage of protons.
   一份水的标本可以看作是质子的集群。
2. A join is a set containing any and all of the tables.
   连接是一个成员和所有成员的集。