variable life insurance policy的用法和樣例：
例句
- There are various types of life assurance policy to choose from.
有各種壽險保單供選擇。 - This paper studies the determination of level premiums for a portfolio of life insurance policies under the stochastic interest rate environment.
摘要在隨機利率的背景下，對壽險保單組均衡保費的確定問(wèn)題進(jìn)行了研究。
