a peal of thunder的用法和样例：
- He was not surprised when he heard a peal of thunder.
- A long peal of thunder came echoing across the sky.
- Each time they rolled the ball, a peal of thunder would shake the mountains, and the fire would flare up in bolts like lightening.
- There was a peal of thunder.
- A peal of church bells rang out in the distance.