黑马

新来的员工很快就成了公司的黑马。

xīn lái yōu mín jiù kě chéng le gōng sī de hēimǎ。

The new employee quickly became the company's dark horse.

在这次比赛中，黑马赢得了冠军。

zài zhè cì bǐ sài zhōng, hēimǎ yíng dé le quán jiāo。

In this competition, the dark horse won the championship.