jackpot       
noun [ C ] uk/ˈdʒæk.pɒt/ us/ˈdʒæk.pɑːt/
 (比赛中的)头奖
the largest prize in a competition or game
  The jackpot was over $1 million. 头奖超过一百万美元。 
 Idiom  
hit the jackpotidiom  突然得到(或赢得)一大笔钱
to suddenly get or win a lot of money
 
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