名词
中文翻译：隐藏的折扣
同义词：
['secret discount', 'under-the-table discount']
例句：
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1. Theyoffered a hidden discount on the new laptops to attract more customers.
他们为新款笔记本电脑提供了隐藏折扣，以吸引更多客户。
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2.The company used secret discounts to encourage customers to buy their products.
该公司使用秘密折扣鼓励顾客购买其产品。
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3. The salesperson was caught offering an under-the-table discount to a customer.
销售人员被发现向一位顾客提供隐藏折扣。