trump card

美 
英 
  • n.王牌;绝招;杀手锏
  • 网络撒手锏;皇牌;最后手段
复数:trump cards  
trump card
n.
1.
王牌;绝招;杀手锏something that gives you an advantage over other people, especially when they do not know what it is and you are able to use it to surprise them

例句

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