But the business must directly provide a service to students.

VOA: special.2009.01.29

Well, I think that if the great majority of people try to derive maximum utility out of a service, like using cell phones and the convenience that cell phones provide, that sacrifice is necessary for satisfaction to occur.

我觉得如果绝大多数人想要,从某项服务中获得最大功利，比如使用手机，享受手机所带来的便利，那么为了满足需求，这种牺牲就是必要的。

耶鲁公开课 - 公正课程节选

What kind of service do you hope to provide with the smartphone later on?

你希望智能手机以后能提供什么样的服务？

没有智能手机活不了 - SpeakingMax英语口语达人

"Commonly,it's a threat against their family back in their home country and it's used to put that person in a position where they feel compelled to provide labor or service in the United States."

VOA: standard.2010.05.24

and provide my service to a community, maybe business-wise.

给社区服务，也许商业方面。

为我的生活 - SpeakingMax英语口语达人