27.同时为祖国做出贡献　 contribute to his country at the same time

26.活跃起来　　　 come to life

25.对……感到兴奋 be excited about

24.应对失败并从中吸取教训

deal with and learn from failure

23.鼓励创新,接受挑战 encourage pioneering work and accept failure

22.弄清楚　　　 make it clear

21.发展经济实力 increase economic power

20.依靠科学技术和知识 rely on science technology and knowledge

19.对…有积极的影响 have a positive effect on

18.踏进　　　　 set foot in / on