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dark horse 英 [dɑ:k hɔ:s] 　美 [dɑrk hɔrs]

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dark horse

phrase. 黑马（出人意外获胜的赛马或参赛人）；（美）“黑马”候选人（常因各方妥协而意外获得提名或当选）　

名词复数:dark horses　

From dark horse to fiery steed, Spain were changed for ever by Euro 2008.　2008年的欧洲杯使西班牙完成了从“黑马”到“悍马”的本质性转变。

I was once with a girl who took one look, giggled, and named him the dark horse.　曾经我让一个女生看过一次，她笑着，并说它是黑马。

1. From dark horse to fiery steed, Spain were changed for ever by Euro 2008.

2008年的欧洲杯使西班牙完成了从“黑马”到“悍马”的本质性转变。
2. I was once with a girl who took one look, giggled, and named him the dark horse.

曾经我让一个女生看过一次，她笑着，并说它是黑马。
3. 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。

dark horse (n.) "competitor for honors or office about whom nothing certain is known, or whose identity is at first concealed," especially, in U.S., politics, "one who is unexpectedly brought forward as a candidate in a convention," 1842, an image from horse racing, of horses whose performances or capabilities are not generally known, in which dark is used in its figurative sense of "unknown."