retrospective premium

例句：

1. 1. The insurance company is required to pay retrospective premiums for any claims that were not covered by the policy.
   保险公司被要求为任何未被保险政策覆盖的索赔支付回顾性保费。
2. 2.The company's decision to increase the retrospective premium was based on a review of its financial performance.
   公司决定提高回顾性保费是基于对其财务状况的审查。
3. 3.The retrospective premium has been calculated based on the historical data and will be adjusted accordingly in the future.
   回顾性保费是根据历史数据计算得出的，未来将根据实际情况进行调整。