【计】 selection set
select; choose; elect; pick; staple; choice; selection
【计】 ALT; selecting
【医】 selection
【经】 pick; select; selecting; selection
gather; troop together; aggregate; assemble; concourse; convene; muster
rendezvous; congregation; concentration
【计】 disjoint set
【医】 aggregate; aggregation; agmen; agmina; convergence
【经】 assembly