沉雷 meaning in Chinese

sunken mine
sunken torpedo

A light flapped over the scene, as if reflected from phosphorescent wings crossing the sky, and a rumble filled the air .
一道闪电划过长空，宛如横空飞过的闪着磷光的翅翼，随即，空中滚过了隆隆的沉雷。
A deep peal of thunder went rolling and tumbling down the heavens and lost itself in sullen rumblings in the distance
一阵沉雷轰轰隆隆当空滚过，渐去渐远，消失在遥远的天边。