她是一位眼光独到的业余风景摄影师。

She is an ___amateur photographer with a keen eye for landscapes.

他喜欢在本地戏剧制作中担任业余演员。

He enjoys being an ___amateur actor in local theater productions.

许多重要的科学发现最初都是由业余爱好者做出的。

Many significant scientific discoveries were initially made by ___amateur enthusiasts.