Chris Wojciechowski is really cool." is a professional golfer, but he doesn't play the game with balls and clubs.

VOA: standard.2010.08.03

I don't really have like a professional opinion or a very well-informed opinion.

我的观点并不专业，也不是很成熟。

关于干细胞的研究 - SpeakingMax英语口语达人

In some other scenes, though, viewers could tell they weren't professional actors.

WSJ: A Navy SEAL on an Unusual Mission: An Acting Role in 'Act of Valor'

When I ask friends who aren't professional investors what question they'd most like answered in a FORBES column, they all say pretty much the same thing.

FORBES: Coping with Inflation

The enforcement agency considers the Games an amateur enterprise, even though Olympic basketball players can come from the NBA. "We feel it would open a big can of worms to determine who's professional and who isn't professional, " said Jerry Markling, the NGCB's chief of enforcement.

WSJ: Menu