coupon sheet

例句：

1. 1. She used her coupons to save money on groceries.
   她用优惠券在杂货上省钱。
2. 2. The store offers a variety of coupons for its customers.
   该商店为顾客提供各种优惠券。
3. 3. He found a coupon in the back of his wallet and used it to buy a new shirt.
   他在钱包的背面找到了一张优惠券，并用它买了一件新衬衫。