优惠购货卷

例句：

1. 1. We can use the discount coupon to get a 20% off on our purchase.
   我们可以使用折扣券来获得我们购买的20%折扣。
2. 2.The store is giving out discount coupons for its upcoming sale.
   该商店正在发放即将到来的促销活动的折扣券。
3. 3.She found a discount coupon in the mail and used it to save money on her next shopping trip.
   她在邮件中找到了折扣券并使用它来节省她下次购物的费用。