基础经济学认为，潜在消费者越多，价格更优惠的可能性就越大。
Basic economics suggests the greater the potential consumers, the higher the likelihood of a better price.
越来越多企业（其中包括了许多外企）的商品登上了优惠清单。
The products of many more companies, including a handful of foreign ones, have been added to the lists.
星巴克、戴尔、福特、JetBlue航空公司和越来越多的公司用Twitter向消费者提供折扣和优惠券。
Starbucks, Dell, Ford, JetBlue and many more companies use Twitter to offer discounts and coupons to their customers.
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