I found a piece of metal on a cement pavement.I shake it in a up and down pattern to create a thunder like metal like sound.<br/>搖小金屬door.wav<br/>聲道：2<br/>類型：wav<br/>loud、OWI、big、boom、rumble、metal、thunder、bass、door、shaking<br/>響、OWI、大、繁榮、隆隆、金屬、雷、低音、由、發抖<br/>資料來源：freesound ( https://freesound.org )