名词
中文翻译：Unknown
同义词：
['discount', 'voucher', 'coupon']
例句：
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1. She used her discount to save money on her purchases.
她利用她的折扣来省钱。
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2. The store offers a variety of coupons for its customers.
该商店为顾客提供各种优惠券。
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3. The student received a coupon as a reward for completing his homework.
学生完成了作业后得到了一张优惠券作为奖励。