地震开始时发出低沉的隆隆声。

The earthquake began with a deep [low] rumbling sound.

《新英汉大辞典》

地震开始时发出低沉的隆隆声。

The earthquake began with a low rumbling sound.

youdao

所以，具备一种独一无二的可识别的叫声无疑是非常有用的，就像米爱卡发出的这种低沉的，卡车一样的隆隆声一样。

So having a uniquely recognizable call, like Mlaika's low truck-rumble sound, could be a very useful.

youdao

所以，具备一种独一无二的可识别的叫声无疑是非常有用的，就像米爱卡发出的这种低沉的，卡车一样的隆隆声一样。

So having a uniquely recognizable call, like Mlaika's low truck-rumble sound, could be a very useful.

youdao