美 [eɪs ɪn]
秘密的知识或技能，能够给你带来优势：指拥有一项秘密的知识或技能，可以在某种情况下给你带来优势或胜利。
... ace in讨人喜欢，惹人注目 ace inhibitor血管紧张素转化酶抑制剂 ace in the hole最后王牌；杀手锏 ...
... ace in 讨人喜欢，惹人注目 ace inhibitor 血管紧张素转化酶抑制剂 ace in the hole 最后王牌；杀手锏 ...
讨人喜欢，惹人注目
He knows something about the boss, which is his ace in the hole.
他对老板有所了解，这是他的王牌。
Our superior technology is our ace in the hole.
我们的优越技术是我们手中的王牌。
That spare can of gas in the trunk was our ace in the hole.
后背箱里那罐剩余的汽油是我们最后的储备。
For example, you hear the expression, ace in the hole, used by many people who would never think of going near a poker table.
VOA : special.2009.11.22
An ace in the hole is an argument, plan or thing kept hidden until needed.
VOA : special.2009.11.22
Often,the ace in the hole wins the game.
VOA : special.2009.11.22
Like any good gambler though, opponents of this critical resource development have an ace in the hole.
AIPAC's ace in the hole is the idea that it represents Jewish interests in a country that is generally philo-Semitic.
Even without nuclear weapons, North Korea has an ace in the hole.