有了正确区分，可以购买正确的产品、拥有更好的广告效果、提高顾客满意度。
With the right segmentation, the right lists can be purchased, advertising results can be improved and customer satisfaction can be increased.
商家已开始通过发送赠品和提升服务来提高顾客忠诚度，不过往往徒劳无功。
Stores hoping to increase loyalty are starting to promote giveaways and improve service, but often in vain.
当西·尔斯的邮购目录带来订单是，罗森沃尔德将交易重组，提高顾客服务体系的速度。
While Sears's catalogs brought in orders, Rosenwald reorganized the business, speeding up the customer service system.
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