triumphantly       
adverb uk/traɪˈʌm.fənt.li/ us/traɪˈʌm.fənt.li/
 得意洋洋
in a way that suggests you have achieved a victory or feel happy because of achieving a victory
  Bob triumphantly announced his promotion. 鲍勃得意洋洋地宣布了自己的升职。 
 "Here it is!" he said triumphantly. “就在这儿!” 他得意洋洋地说。 
 See: triumphant
 - More examples
- They dream of the day when they can march triumphantly into the capital city.
- She waved triumphantly to the crowd in the stadium.
- The army triumphantly declared that they had seized the city from the rebels.