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

When his father refused to let him have his own way, the child played his trump card by crying.
看到爸爸没有如自己的意，那孩子便使出绝招，哇的一声哭了起来。
Ultimately we hold the trump card that no new treaty to evolve a closer union of eurozone states can be agreed without our consent.
最后，英国还有一张王牌：没有英国的同意，欧元区国家结成更紧密联盟的新条约就无法通过。
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。
Jack showed his trump card at the last minute.
杰克在最后一刻打出了王牌。
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。
She could threaten to play her trump card, an autobiography of embarrassing disclosures.
她可能会威胁要拿出她的杀手锏：出自传来爆料糗事。
Jobs are the trump card.
就业是一张王牌。
The opponent has to play his trump card to secure his third trick.
对方只好打出将牌以赢得第三墩牌。
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。
Now it's time that you played your trump card.
现在是你摊王牌的时候了。