冷门的英文：
an unexpected winner; dark horse; sth. recieves little attention

参考例句：

She sprang a surprise by losing the game.
她输了比赛，爆了个大冷门。

That movie is the sleeper of the year: suddenly everyone has to see it.
那部电影爆出冷门，成了今年的最佳影片。突然间，每一个人都不得不一睹为快

That movie was the sleeper of the year: suddenly everyone had to see it.
〞那部电影爆出冷门,成了今年的最佳影片。突然间,每一个人都不得不一睹为快。〞

unexpected是什么意思：
adj. 意外的，想不到的

Something unexpected occurred.
发生了意料之外的事。

The campaign suffered an unexpected reversal.
比赛意外地失败了。

Unexpected developments,changes,results
未料到的发展、变化、结果

winner是什么意思：
n. 胜利者,优胜者

He was responsible for the placing of the winners.
他负责评定选手名次。

They hailed the winner with clapping.
众人以热烈的掌声为胜利者喝彩。

Did anyone back the winner?
有人下注下在最后胜出的这匹马上了吗？

dark是什么意思：
n. 黑暗，暗处，无知，模糊，暧昧
adj.（颜色）深的；（皮肤等）微黑的，邪恶的，坏的，无知的，蒙昧的

It was getting dark.
天色渐暗。

It was dark and eerie.
里面又漆黑又可怕。

That was a shot in the dark.
这支箭是瞎放的。