37.长到肩高　 grow to a shoulder-height of

36.大规模存在　 exist in huge numbers

35.通过采集草根生存　 live by gathering roots

34.出售　 go on sale

33.解决问题　 solve the problem

32.不同意他的观点　 disagree with him

31.吉尼斯世界纪录大全

the Guinness Book of World Records

30.总工程师 the chief engineer

29.对钱很贪婪be greedy for money

28.与老同学保持联系

keep in touch with his former classmates