/ˈθʌndə(r) ||; ˈθʌndɚ/verb[I] 1 (used with it 与it连用) to make a loud noise in the sky during a storm 打雷: The rain poured down and it started to thunder. 大雨倾盆而下，并开始打雷。
2 to make a loud deep noise like thunder 发出雷鸣般的巨响: Traffic thundered across the bridge. 车辆隆隆驶过那座桥。