half-yearly premium

例句：

1. 1. The company offers a discount for customers who purchase their insurance policies in advance.
   该公司为提前购买保险单的客户提供折扣。
2. 2. The new policy will increase the premium for those who choose to pay annually instead of monthly.
   新政策将提高那些选择每年支付而不是每月支付的人的保费。
3. 3.The insurance company is reviewing its pricing structure to ensure it remains competitive with other companies offering similar services.
   保险公司正在审查其定价结构，以确保它与其他提供类似服务的公司保持竞争力。