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

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。
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。
Nor can we any longer fall back on our historical trump card of geographic isolation.
我们也不再能依靠天然屏障的历史王牌。
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。
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。
'What's her trump card?
什么是她的王牌呀？
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。
But China also has a trump card that others don't:$ 3.2 trillion in cash reserves, by far the biggest hoard in the world.
但中国手里握有一张别国不具有的“王牌”：3.2万亿美元的外汇储备，这是全球规模最大的外储。