名词
中文翻译：七价
同义词：
['seven prices', 'seven rates']
例句：
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1. The company offers discounts forcustomers who buy in bulk.
该公司为大量购买的客户提供折扣。
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2. The price of theproduct has increased by seven percent since lastyear.
该产品的价格自去年以来上涨了7%。
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3. The government is considering raising the taxrate on luxury goods.
政府正在考虑提高奢侈品的税率。