dark horse意思是黑马。
发音：
英[dɑːk hɔːs]，美[dɑːrk hɔːrs]。
引申义：
Dark horse 本来是用来指在比赛中意外胜出的马，因为是出人意料的，所以用dark，因为dark有“隐秘的，未知的”的意思。
双语例句：
Until recently A. S. Byatt was a dark horse, known only by those steeped in literature.
一直到前不久，A.S.拜厄特都还是只为潜心研究文学的人所知晓的一匹黑马。
"a dark horse" is one that shows unexpected racing speed and comes in first, even though the experts said he had little chance of winning.
一匹已被专家认为没有获胜希望的马，却在赛马中跑出了出人意料的速度，夺得了第一名，这就叫“黑马”。
Don't think you'll beat him easily, he may be a dark horse.
不要以为你会轻而易举地胜过他，他可能是出人意料的高手。
He's a bit of a dark horse: he was earning a fortune, but nobody knew.
他可算是藏龙卧虎：赚大钱，但没人知道。This method is the dark horse of the methods in this class.
这个方法就是这个类中的“黑马”方法。
