彼は写真のプロとして二十年働いている。
He has worked as a professional photographer for twenty years.
大学を卒業したらプロのサッカー選手になりたい。
After graduating from university, I want to become a professional soccer player.
さすがプロの仕事は仕上がりが違う。
As you'd expect, a professional's work has a different finish.