收音机发出噼啪声，信号不太好。

The radio ___crackled with static, making the signal hard to hear.

老瓷碗的表面因为年代久远而出现了细小的裂纹。

The old porcelain bowl's surface had ___crackled over time.

孩子们的笑声在操场上欢快地回荡。

The children's laughter ___crackled across the playground.