自然保費是每年只反映受保人該年齡死亡成本，因而隨年齡增長而上升的保費。
A natural premium reflects only the mortality cost at the life insured's age each year, so it rises with age.
自然保費是每年只反映受保人該年齡死亡成本，因而隨年齡增長而上升的保費。
A natural premium reflects only the mortality cost at the life insured's age each year, so it rises with age.