Health care must be at the service of all who need it.

医疗保健机构必须为所有需要者提供服务。

《牛津词典》

Geometry at the service of man!

几何学为人类服务！

youdao

Her goal: "I plan to put myself at the service of my country and perhaps of humanity."

她的目标：“我计划把我自己放到为国家也许为整个人类服务的位置。”

youdao

The house in Tecun Uman has been at the service of migrants for more than a dozen years, explains Ademar Barilli, a Catholic priest from Brazil, who supervised the construction of the house on the site of what was a city garbage dump.

VOA: standard.2009.09.01

He shall be charged with the service of the gods That they might be at ease.

他听命于众神,这样一来他们便能轻松度日。

耶鲁公开课 - 旧约导论课程节选

So most of the people who are here at the Kennedy School have a commitment to public service,

肯尼迪学院的大部分学生有志于公共服务，

肯尼迪学校 - SpeakingMax英语口语达人

In such circumstances you are at the service of the story, the actors and the images.

WSJ: Jean-Yves Thibaudet | A Classicist in the Modern Age | Cultural Conversation by Stuart Isacoff

What we did choose was to put our talents at the service of clients.

FORBES: Look Out! That Elephant In The Room Is The Client

The economy must be at the service of man, not the other way round.

ECONOMIST: Lionel Jospin, France��s would-be president