It is true that when there are start-up costs, such as credit checks, involved in serving a new customer, the costs exceed those of serving a repeat customer.

的确，当服务新客户需要启动成本时，比如信用检查，其成本要高于服务老客户的成本。

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It is not at all clear why the costs of serving a highly loyal customer should in principle be different from those of serving any other type of repeat customer.

为什么服务一个高度忠诚的顾客的成本原则上与服务其他类型的回头客的成本是不同的，这一点完全不清楚。

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He was released from prison after serving a sentence of five years.

他服刑五年后获释。

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He earned a little money by serving as a model to artists who could not pay for a professional model.

VOA: special.2009.08.01

You also read an article by Milgrom where Milgrom talks about Priestly cultic imagery serving as a kind of theodicy.

在米尔格罗姆的一篇文章中,这篇文章讲到祭司的宗教仪式,被形象化为一种神义论。

耶鲁公开课 - 旧约导论课程节选

And it's serving a country. I mean, I love this country, you know.

这是为国家服务。我是说，我爱这个国家。

英国的军人 - SpeakingMax英语口语达人

Zuma in Knightsbridge is a beautiful Japanese restaurant serving a sophisticated version of the informal izakaya cuisine.

BBC: Insider��s guide to London

Dennis Masellis is behind bars in an upstate New York prison, where he is serving a three-to-nine-year sentence.

FORBES: They've Gotta Have It

He is serving a life sentence having been denied parole and still maintains his innocence.

BBC: Celebration held for murdered woman Helen McCourt