橙橙小狐狸
直接用coupon。Coupon:a piece of paper which can be used to get something withoutpaying for it or at a reduced price
小蝴蝶飞不过
优惠券的英文是couponcoupon 英[ˈku:pɒn] 美[ˈku:pɑ:n]n. 优惠券[例句]Bring the coupon below to any Tecno store and pay just £ 10.99.持下面的优惠券到任意一家Tecno专卖店,只需付10.99英镑。