他在比赛中表现出色，真是个黑马。

He performed excellently in the race, truly a dark horse.

谁能想到他会成为选举中的黑马呢？

Who would have thought he would become the dark horse in the election?

这本书的销量出乎意料，成了年度黑马。

The sales of this book were unexpected, making it the dark horse of the year.

他在比赛前不被看好，但最后却成了黑马。

He was not favored before the competition, but he ended up being the dark horse.

这家公司在市场上突然崛起，成为了行业的黑马。

This company suddenly rose in the market, becoming a dark horse in the industry.

所以，也许会出现黑马也说不定。

So a dark horse may appear.

这可能就是一匹黑马的宿命。

This may be a dark horse of destiny.

王建民是今年洋基队的黑马。

Wang is the dark horse for Yankees this year.

我的黑马将是非洲球队之一。

My dark horse would be one of the African teams.

黑马剧作家弗乐克勒斯赢了第一大奖。

Dark horse playwright, Philocles, has taken first prize.