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。

youdao

Not only was he taking care of us, but also he has been treating patients with COVID-19 every day and serving the community selflessly.

他不仅照顾着我们，而且每天都在治疗新冠肺炎患者，无私地为社会服务。

youdao

I'm not overseas serving my country during the holidays.

在假期，我并没有在国外服务我的国家。

youdao

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

because you read the Bill of Rights, for example, The Declaration of Independence, citizens have a duty to put a new government if it is not serving well the people.

举个例子，如果你读《人权法案》,或者《独立宣言》,如果政府不够尽责,公民有权支持一个新的政府。

麻省理工公开课 - 媒体、教育、市场课程节选

Now that's not a lot of pasta but that's considered a serving.

这实在不多,但这是一餐的份量

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Bulls can rebut the gloomy view of the BLS report with easy aplomb thanks to the government employment data serving not as a canary in a coal mine for discerning economic trends, but more like a turkey in a wind tunnel.

FORBES: The Harsh Reality Of The Falling Unemployment Rate

But self-serving or not, many of his observations ring true.

FORBES: Dow Jones Interactive

This said pubs not serving food and members-only clubs could choose whether or not to ban smoking.

BBC: NEWS | UK | UK Politics | Cabinet agrees England smoke ban