29.经济/心理负担 financial burden / psychological burden

28.学习知识和技能 acquire knowledge and skills

27. 开阔眼界 widen one’s horizon/ broaden one’s vision

26. 竞争与合作精神 sense of competition and cooperation

25.责任感 / 成就感 sense of responsibility/ sense of achievement

24.复杂的社会现象 a complicated social phenomenon

23.导致，引起 lead to/ give rise to/ contribute to/ result in

22.利远远大于弊 the advantages far outweigh the disadvantages。

21.对…产生有利/不利的影响 exert positive/ negative effects on…

20.…也不例外 …be no exception