To be diligently engrossed in studying; to always have a book in hand, indicating deep devotion to learning.
他从小就手不释书，对知识的渴望令人敬佩
He has always had a book in his hand since childhood, and his thirst for knowledge is admirable.
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To be diligently engrossed in studying; to always have a book in hand, indicating deep devotion to learning.