It is used sometimes to describe a political move that leads to an unexpected win.

VOA: special.2009.02.15

It's that moment in which Phoebus Apollo makes a sudden and unexpected appearance.

太阳神阿波罗,突然而又出人意料的出现了。

耶鲁公开课 - 弥尔顿课程节选

I thought he was just a tremendous character he do so unexpected to encounter this level.

我认为他是个了不起的演员,因为他在这个角色上达到的水平,真的是让人难以置信。

麻省理工公开课 - 电影哲学课程节选

She wanted to represent life on a ship in an unexpected way.

VOA: special.2010.06.11

The records make it perfectly clear that the kingdoms of Pylos and Knossos were bureaucratic monarchies of a type unexpected in Greece, but in many ways similar to some contemporary and earlier kingdoms in the eastern Mediterranean.

记录清晰地表明皮洛斯和,科索诺斯王国,是不同于希腊的君主专制政体,但在很多地方类似于,一些同期和早期的地中海东部的王国

耶鲁公开课 - 古希腊历史简介课程节选

But a person who threw a curve ball did something unexpected.

VOA: special.2009.04.12

Banks that received money from the Troubled Asset Relief Program reaped unexpected profits and repaid billions in loans, resulting in a record for the Federal Reserve.

VOA: standard.2010.01.15