A scholar who is knowledgeable from books but lacks practical experience and real-world understanding; a naive or inexperienced intellectual.
他虽然饱读诗书，但在处理紧急事务时，显得有些白面儒生，缺乏应变能力
Although he is well-read, when dealing with urgent matters, he appears somewhat like a bookish scholar, lacking the ability to adapt.
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