advance premium

例句：

1. 1. The insurance company willcharge an additional premium for this service.
   这家保险公司将为这项服务收取额外的保险费。
2. 2. Thepolicyholder must pay the full premium beforethe policy expires.
   保单持有人必须在保单到期前支付全额保费。
3. 3. The companyis offering a discount on the premium forearly payment.
   该公司为提前支付保费提供折扣。