regularity

n. /ˌreɡjəˈlærəti/ C1

规律性；经常

The state of happening repeatedly with equal time between events.

仙境例句

With great regularity, the Hatter called for a clean cup, and everyone moved round.

帽匠极有规律地要一只干净杯子，于是大家就挪一个座位。