The second for he introduces is that people can do the different kinds of job. By doing so, people can rely on each other because they make different contributions to the society.

另一个是从事不同种类的工作，做出不同的贡献，人们相互依赖，从而形成稳定性。

youdao

I do hope everybody can become the backbone of our nation and make great contributions to society!

我也希望每个人都能成为我们民族的脊梁，为社会做出巨大的贡献！

youdao

New I want to thank you, my life will remember your teachings: do a good for society, the selfless contributions, good for the country, be an upright person!

我要感谢您，我一生都会记住您的教诲：做一个善良，为社会无私奉献，对国家有益的人，做一个正直的人！ ！

youdao