名词
中文翻译：优惠券
同义词：
['discount', 'voucher', 'coupon']
例句：
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1.The store offers a 20% off coupon for all purchases made on Black Friday.
该商店为所有在黑色星期五购买的商品提供20%的折扣优惠券。
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2.She used her student discount to save money on her groceries.
她利用学生的折扣来节省杂货的费用。
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3. The company is offering a loyalty program with a monthly coupon for new customers.
该公司为新客户提供月度优惠券，以奖励他们的忠诚度。