22.利远远大于弊 the advantages far outweigh the disadvantages。
23.导致,引起 lead to / give rise to / contribute to / result in
24.复杂的社会现象 a complicated social phenomenon
25.责任感 / 成就感 sense of responsibility / sense of achievement
26. 竞争与合作精神 sense of competition and cooperation
27. 开阔眼界 widen one’s horizon / broaden one’s vision
28.学习知识和技能 acquire knowledge and skills
29.经济 / 心理负担 financial burden / psychological burden
30.考虑到诸多因素 take many factors into account / consideration