discount expense

例句：

1. 1. We need to calculate the total discount expense for this project.
   我们需要计算这个项目的总折扣费用。
2. 2. The company offered a 10% discount on all its products.
   该公司对所有产品提供10%的折扣。
3. 3.The discount expense is calculated based on the original price and the discount rate.
   折扣费用是根据原价和折扣率计算得出的。