n.[C]

1. （紙牌、骰子等的）一；么點，么點牌
2. （網球賽等的）發球得分
3. 【口】王牌，能手，名手，佼佼者[（+at）]
   He is an ace at chess.

   他是個棋藝極精的人。

a.

1. 【口】第一流的，突出的
   He is an ace mechanic. He can repair any cars.

   他是一流的機械師，什麼車都會修。

   an ace science fiction writer

   第一流的科幻小說作家

n.

1. a playing card with a single spot on it, the highest card in its suit in most games.
2. informal a person who excels at a particular activity.
3. Tennis  a service that an opponent is unable to return.
4. Golf  a hole in one.

adj.

v.

1. (in tennis) serve an ace against.
2. Golf  score an ace on (a hole).
3. N. Amer. achieve high marks in (a test or exam).

[名]

1. ①（紙牌、骰子等的）一。
2. ②第一位；一流。
   그가 우리 국가대표팀의 에이스이다.

   他是我們國家隊的一流選手。

3. ③（棒球）第一投球手。
4. ④（網球）發球得分。