1. 隆隆声：generator 发电机 | rumbles 隆隆声 | underdog 失败者
1. Southern Italy's Mount Etna erupted on May 12, and the Philippines has raised its alert level as the Taal volcano rumbles.
2. She speaks in a girlish voice, and her laugh rumbles soft and low.
3. 911查询·英语单词
3. The ice cracks and rumbles like a rock concert on the river.