如果达美航空通过这种方式，发放旅行代金券的价值低于之前所采取的方式，那么这将可能为达美航空带来成本节省。

There also may be a cost benefit to the airline, if Delta can reaccommodate passengers on overbooked flights by handing out travel vouchers of lesser dollar value than under the prior system.

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与其在登机口说服游客自愿离开已经超售的航班，达美航空现在可以让旅行者提前为补偿的现金券竞价，并接受航班变更。

Instead of asking for volunteers at the gate to leave overbooked flights, Delta Air Lines now is enabling travelers to bid on the opportunity much earlier in the process.

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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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