ace

1. N-COUNT 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. (纸牌)(A)

...the ace of hearts. …红桃A。

2. N-COUNT If you describe someone such as a sports player as an ace, you mean that they are very good at what they do. 一流选手[journalism]

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. ADJ Ace is also an adjective. 一流的[ADJ n]

...ace horror-film producer Lawrence Woolsey. …一流的恐怖片制片人劳伦斯·伍希。

4. N-COUNT In tennis, an ace is a serve which is so fast that the other player cannot reach the ball. Ace球 (网球比赛中直接得分的发球)

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Ace球。

5. PHRASE 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. 手中的王牌[v-link PHR, PHR after v]

Our superior technology is our ace in the hole. 我们的优越技术是我们手中的王牌。