We usually deal on a 20% trade discount basis with an additional quantity discount for orders over 1000 units.
我们通常给予20%的商业折扣,外加订货1000件以上的数量折扣。
Before Annie Sullivan came to our house, one or two people had told my mother that I was simple-minded.
安妮·莎利文来到我们家之前,已有一两个人告诉我母亲,说我头脑简单。