a solemn silence的用法和样例：
- The mourning hall was filled with a solemn silence.
- There was a solemn silence when the pope appeared.
- Tower top, and a gold-plated crescent, glittering, with a solemn silence.
- A solemn silence reigned.
- He looked at her with a solemn expression.
- He made a solemn promise to do better.