They knew they had been rumbled.

他们知道自己已经被识破了。

The machine rumbled as it started up.

机器轰鸣着发动起来。

Her stomach rumbled. She hadn't eaten any breakfast.

她的肚子咕咕直叫。她早上什么也没吃。

The sky, swollen like a black bladder, rumbled and crackled.

天空胀得像个黑色的气囊，发出隆隆声和劈啪声。

Thunder rumbled in the distance.

远处雷声咕隆咕隆地响。