dual rate

例句：

1. 1. The bank offers a dual-rate mortgage to help first-time homebuyers.
   银行为首次购房者提供双利率抵押贷款。
2. 2. This policy is designed to protect consumers from high dual-rate loans.
   这项政策旨在保护消费者免受高额双利率贷款的侵害。
3. 3. The company has introduced a new dual-rate loan system to improve customer service.
   该公司推出了新的双利率贷款系统，以提高客户服务水平。