trump card

英 [ˈtrʌmp kɑːd]

美 [ˈtrʌmp kɑːrd]

n. 王牌; 绝招; 杀手锏

牛津词典

noun

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

noun

a playing card in the suit that has been declared trumps
1. the ace of trumps is a sure winner
Synonym:trump

I'll play my trump card in the final round.
在最后一局我会出王牌。
An unstoppable trump card with enough power to bring order to the world.
一张所向披靡的王牌将命令这个世界。
'What's her trump card?
什么是她的王牌呀？
The US faces special pressures in an election year, but it holds the trump card.
美国在选举年面临特殊压力，但是它手里握着王牌。
Not many people know it but shutting up can be the trump card in a lot of situations.
不是每个人都知晓这一点，但沉默在很多场合下的确是最好的王牌。
His other trump card is his financial independence.
韩寒的另外一张王牌就是他的经济独立性。
Henry is the trump card of France.
亨利是法国队中的皇牌。
In the end, the Ten took their appeal to the Supreme Court; this, they had believed from the outset, would be their trump card
最后，10个人上诉到最高法院：他们从一开始就认为这一招是他们的王牌。
Curviness is the trump card.
但是曲线美才是王牌。
The United States also needs to help people adjust to change, so that it can maintain its greatest trump card: openness to trade, investment, people, and ideas.
美国还需要帮助民众适应变化，以便确保它的最大优势：对贸易、投资、民众和观念的开放。