congress  
noun uk/ˈkɒŋ.ɡres/ us/ˈkɑːŋ.ɡres/
  (MEETING)      
 [ C, + sing/pl verb ]代表大会 
a large formal meeting of representatives from countries or societies at which ideas are discussed and information is exchanged
  an international/medical congress 国际/医学代表大会 
 the congress of the Australian Council of Trade Unions 澳大利亚工会委员会代表大会 
 Compare: awayday conclaveconference (MEETING)consultationconvention (MEETING)convocation forum (MEETING)meetingseminarsummit (MEETING)symposium 
 - More examples
 - Welcome to the party's triennial congress.
 - They met at a legal congress.
 - Next year's congress will take place in Delhi.