per mille

例句：

1. 1.I'll give you a per mille discount on the purchase.
   我会给你的购买打九折。
2. 2. The price is permille of the original cost.
   价格是原价的十分之一。
3. 3. She decided to takea per mille meal for lunch.
   她决定吃一顿每一分钱的午餐。