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

Now it's time that you played your trump card.
现在是你摊王牌的时候了。
The candidate still has one more trump card to play.
候选人手里还有一张王牌。
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。
Don't reveal your trump card before the crucial moment.
不到紧急关头不要亮出撒手锏。
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。
Jobs are the trump card.
就业是一张王牌。
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。
When we meet again, he tells me that the truth is, if you're a migrant's child, there is little chance you will make it in entertainment or sport. Your only trump card is education.
我们再次见面时，他告诉我，事实是，如果你是移民孩子，你在娱乐界和体育界几乎没有机会，你唯一的王牌就是教育。
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。
It is always good to enter negotiations with a trump card.
手握一张王牌去谈判总是件好事。