The point is that they have received what they have through the free exchange of people who have given them their holdings, usually in exchange for providing some other service Good enough.

关键是，他们赚到的这些钱,都是通过与人自由交换得来的,那些人也得到了报酬，通常是以提供其他服务作为交换的,很不错。

耶鲁公开课 - 公正课程节选

but in relation to the other schools, we're very much focused on government service

但是相比其它的学院，我们更关注政府服务，

肯尼迪学校 - SpeakingMax英语口语达人

Throughout all of this, they are subjected to a course of rigorous study and physical training that will lead them to adopt prominent positions in the military and other branches of public service.

这一进程，需要他们遵循,严格的学习及体能的训练,以便他们顺利接掌重要的军职,及其它公共服务事项。

耶鲁公开课 - 政治哲学导论课程节选

He got this from Marie Curie - you can imagine they used the postal service, I'm not sure how else they would have transferred it to each other.

当他从Marie，Curie拿到这个时,你们可以想象他们一定是把它，邮寄过去的,不然我不知道他们。

麻省理工公开课 - 化学原理课程节选

A predication, on the other hand, usually goes forward in the service of referentiality.

另外，一个声明通常会走向,指示性功能。

耶鲁公开课 - 文学理论导论课程节选