grave accident

例句：

1. 1. The tragic accident has left many people dead and injured.
   这场悲剧性的事故导致许多人死亡和受伤。
2. 2. The catastrophic event caused widespread panic in the city.
   这场灾难性的事件在城市中引起了广泛的恐慌。
3. 3. The tragedy of the accident reminds us to always be cautious when driving.
   这次事故的悲剧提醒我们在驾驶时必须时刻保持警惕。