two-rate two-part prepayment meter

例句：

1. 1. The company has implemented a two-rate pricing model to differentiate its products.
   该公司实施了双费率定价模型，以区分其产品。
2. 2.The two-rate system is designed to simplify the tax process for businesses.
   双费率系统旨在简化企业税务流程。
3. 3. The two-rate system allows businesses to choose between a flat rate and a variable rate based on their needs.
   双费率系统允许企业根据需求选择固定费率或可变费率。