Your electric toothbrush will beep to notify you that dutiful brushing twice a day every day for the past six months has earned you enough points for a 10 percent discount on your next checkup.

你的电动牙刷会发出声音，提醒你注意一天保证刷两次牙，会让你在过去的6个月中，赚得足够分数，以获得下一次健康体检的9折优惠。

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When they gave the number of an unused Clubcard it earned a 1% discount.

当他们报出一张已经闲置不用的卡号时，只得到1%的折扣；

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American Express earns revenues from card licensing fees, royalties on billings, charge volume, net spread revenue and cards in force, foreign exchange conversion revenue and also a share of the discount revenue earned by the operator.

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