这个绘画比赛欢迎专业人士和非专业人士参加。

This painting competition welcomes both professionals and ___non-professionals.

这个业余选手的非专业表现让比赛失去了悬念。

The ___non-pro performance of this amateur player made the match predictable.

虽然他是业余选手，但他的球技不输职业运动员。

Though he's a ___non-pro, his skills are on par with professional players.