You can use ace to describe someone such as a sports player who is very good at what they do.
双语例句
例：
ace horror-film producer Lawrence Woolsey.
一流的恐怖片制片人劳伦斯·伍希。
NOUN. 名词
aces
1.?[C 可数名词] （纸牌）A
An ace is a playing card with a single symbol on it. In most card games, the ace of a particular suit has either the highest or the lowest value of the cards in that suit.
双语例句
例：
the ace of hearts.
红桃A。
2.?[C 可数名词] 一流选手
If you describe someone such as a sports player as an ace, you mean that they are very good at what they do.
双语例句
例：
Despite the loss of their ace early in the game, Seattle beat the Brewers 6-5.
尽管在那场比赛开始不久就失去了一流队员，西雅图队仍以6比5击败了酿酒人队。
3.?[C 可数名词] 网球比赛中直接得分的发球
In tennis, an ace is a serve which is so fast that the other player cannot reach the ball.
双语例句
例：
Agassi believed he had served an ace at 5-3 (40-30) in the deciding set.
阿加西认为他在决胜盘中5-3(40-30)时曾发出过一记直接得分球。
PHRASE. 习语
ace in the hole
1.?手中的王牌
Something that is an ace in the hole is an advantage which you have over an opponent or rival, and which you can use if necessary.