phrase1: unusually large gap
phrase2: abnormal huge opening
sentence1: Stewartville, the county’s second largest city, is slightly over 1/20th the size at roughly 6,000 people, an unusually large gap for a metropolitan area.
sentence2: Stewartville, the county’s second largest city, is slightly over 1/20th the size at roughly 6,000 people, an abnormal huge opening for a metropolitan area.