For example, if you provide an easy to use, closed loop customer service process, this may save your customer time when they have a problem or a question.

例如，如果你能提供一套简单便捷的客户服务程序，这可以帮客户节省时间。

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Perceived service quality, transactional customer satisfaction and cumulative customer satisfaction form a closed loop, to some extent each other.

感知服务质量、交易性顾客满意、累积性顾客满意之间形成了一个闭环，在一定程度上互为因果。

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American Express says it is uniquely positioned to offer the service thanks to its "closed-loop" business model in which it acts as card issuer, merchant acquirer and payment processing operator.

BBC: Foursquare and Amex join forces in UK to offer discounts