out-debate       
verb [ T ] (also outdebate) uk/ˌaʊt.dɪˈbeɪt/ us/ˌaʊt.dɪˈbeɪt/
 赢得辩论
to debate a subject (= discuss it formally) better than someone else
  Although out-debated by the opposition leader, the Prime Minister still won the vote. 尽管在与反对党领袖的辩论中落败,首相还是在投票表决中胜出。 
 As a trained lawyer, she could outdebate anyone.
 - More examples
 - After out-campaigning all the other candidates, she then out-debated them in the final television debate.
 - It's very difficult to outdebate him on any technical subject because he's so knowledgeable.
 - I felt that I had been out-debated but still managed to score a few points off him.