membership grade

例句：

1. 1. The company's membership grade system is designed to reward loyalty.
   公司的会员等级制度旨在奖励忠诚度。
2. 2. The new membership grades have been introduced to simplify the process.
   新的会员等级已经引入，以简化流程。
3. 3. The membership grade affects how much you pay for a product.
   会员等级影响你为产品支付的金额。