Sentences with Closed Book

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Advanced as in perplexity Refers to something that is mysterious or unknown. Clear All

2 Example Sentences Showcasing the Meaning of 'Closed Book'

Quantum physics remained a closed book for many, as the concepts delved into the mysterious nature of the subatomic world.

Despite the professor's efforts to simplify the economic theory, it remained a closed book for the majority of the students.

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