demonstrably       
adverb uk/dɪˈmɒn.strə.bli/ us/dɪˈmɑːn.strə.bli/
 可论证的,可证明的
in a way that can be proved
  That's demonstrably untrue! 这显然是不真实的! 
 The Arctic regions of North America, Europe, and much of Russia are all becoming demonstrably warmer. 北美、欧洲和俄罗斯大部分地区的北极地区都明显变暖。 
 See: demonstrable
 - More examples
- Everything you wrote was demonstrably false.
- The country had failed demonstrably in the fight on drugs.
- Those who are saving for retirement will be demonstrably better off than those who do not.