trump card
noun[Cusually singular]
uk/ˈtrʌmp ˌkɑːd/us/ˈtrʌmp ˌkɑːrd/anadvantagethat makes you morelikelytosucceedthan otherpeople,especiallysomething that otherpeopledo notknowabout:
独有的优势，独门法宝；王牌；绝招Anthea was about toplayhertrumpcard- without hersignaturenone of themoneycould bereleased.安西娅准备打出她的王牌——没有她的签字，一分钱也不能动。
Advantage and disadvantage
- a stick to beatsomeonewithidiom
- an ace upyoursleeveidiom
- attraction
- be well in thereidiom
- be/stay/keep one jump aheadidiom
- head start
- hold all the cardsidiom
- in
- in the right place at the right timeidiom
- it's tough at the topidiom
- lock
- lose
- profit
- scent bloodidiom
- secret weapon
- silver lining
- stick
- the best of both worldsidiom
- tough
- trouble