ace /eis/ I. n.［c］王牌飞行员（击落敌机五架以上者）：a motorcycle ace王牌摩托车手The plane had a breakdown in the air, but it was fortunately removed by the ace pilot.飞机在空中发生了故障，但幸运的是被王牌驾驶员排除了。‖II. adj.一流的：an ace swimmer一流的游泳选手