This question discusses which types of places should be noise-free. In responding, one can consider places that require a quiet environment, such as libraries, hospitals, classrooms, etc., and why these places need to be kept quiet. The importance of a quiet environment for focus, relaxation, and health can be discussed.

這個問題探討了哪些類型的地方應該是無噪音的。在回答時，可以考慮那些需要安靜環境的場所，如圖書館、醫院、教室等，以及為什麼這些地方需要保持安靜。可以討論安靜環境對於專注、放鬆和健康的重要性。