This is individual services like teaching piano or cutting someone's grass or a hairstylist.

还有个人服务，比如教钢琴,或是帮别人修剪草坪或是作一个发型师。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选

because it's only by saying it and being corrected that you're going to learn.

因为只有当你讲出来，然后别人帮你纠正错误，你才会有所收获。

想学好英语吗？ - SpeakingMax英语口语达人

On the other hand, if somebody says, "Somebody call the police," well, I got things to do and so diffusion of responsibility explains both when we're willing to do terrible things and also when we're willing to help people who are in trouble.

但是如果有人叫，“来人，快报警”,“我有事要忙”,责任分散,既能解释我们在什么情况下会干坏事,也能解释我们在什么情况下会帮别人。

耶鲁公开课 - 心理学导论课程节选

you want to solve the problem for the other person.

你就想帮别人解决问题。

挽救生命的工作 - SpeakingMax英语口语达人

And I helped other people write their books.

也帮别人写书。

在洛杉矶写作 - SpeakingMax英语口语达人