Dreams never end. They are the driving force behind space exploration and they are also the driving force behind efforts to create better cities and better lives.

梦想，永无止境——这既是人类探索宇宙不变初衷，也是人们建设更美城市、更好生活的内在动力。

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The 36-year-old former soldier has become a driving force behind efforts to force the Army to revise its response to soldiers suffering from PTSD.

NPR: Former Soldier Helps Others Fight Army for Help

There are many billionaires in Canada, but only one of them has emerged as a driving force behind Canadian efforts regarding two of the most important natural resources in the country: oil and hockey.

FORBES: The Most Important Billionaire In Canada

For more than 45 years, ICTP has been a driving force behind global efforts to advance scientific expertise in the developing world.

UNESCO: Basic Sciences