21.  It can helps us to know society is complicated, and helps us to learn a lot of knowledge that we can't learn from book .

22.  It will enable us to learn a lot which can't be learned from book .

23.  In the last year, my experience about college life is aboundant , I assume that I have learn a lot of it.

24.  I have learned a lot of knowledges about news at Zhengzhou Univesity.

25.  During the colledge time, they learned a lot of knowledge, not focused in one side , and they didn't like the specialize knowledge they learned in college.

26.  And from changing work often they can learn a lot of knowledge.

27.  Firstly, they could learn a lot of knowledge from different job , which would make him effecient in other jobs.

28.  They firmly believe that if they work hard at it all along they can learn a lot from it and be excellent.

29.  While often changing their work they can feel that life is wonderful and they can learn a lot from the new job, too.

30.  From changing the job I can learn a lot from the new job.