7 Example Sentences Showcasing the Meaning of 'Closed Book'
Despite countless attempts, the alien technology was a closed book to Earth scientists, leaving them puzzled and intrigued.
The encrypted message proved to be a closed book for the codebreakers, requiring exceptional skills to decipher its meaning.
After years of negotiations, the two countries decided to closed book the trade agreement.
As the software development project neared its end, the team decided to closed book the coding phase and move to testing.
The architect meticulously closed book the design plans, ensuring every detail met the client's expectations.
The author felt a mix of emotions as she closed book the final chapter of her long-running book series.
The financial analyst recommended the company to closed book the merger deal for better long-term prospects.