naif

The young naif believed every story he was told.

用法提示：名词，指天真的人，表现出缺乏经验或易轻信他人。

Despite her intelligence, she remained a naif in matters of business.

用法提示：名词，指在某方面缺乏经验、单纯的人。

He was a political naif, unaware of the corrupt practices around him.

用法提示：名词，指在某一领域缺乏经验或世故的人。