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。
Proximity to America, Mexico's trump card, has been made more valuable by the high oil price.
邻近美国是墨西哥的王牌，这使得高油价更有价值。
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。
The candidate still has one more trump card to play.
候选人手里还有一张王牌。
Jack showed his trump card at the last minute.
杰克在最后一刻打出了王牌。
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。
Spatial sound reproduction, the loudspeaker's trump card ever since, is noticeably more three dimensional and offers a much larger spatial image.
音场表现是这对喇叭的王牌，它可以营造出一个更加立体的三度空间音场，空间感也更为广阔。
Jobs are the trump card.
就业是一张王牌。
Henry is the trump card of France.
亨利是法国队中的皇牌。
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。