flare block

例句：

1. 1. The firefighters were able to contain the flames and prevent a major flare block.
   消防员们能够控制火焰，防止了一场大规模的爆炸。
2. 2.The engineer used a flare block to illuminate the area before starting the construction.
   工程师使用了一个闪光弹来照亮施工区域。
3. 3.The flare block was triggered by the sudden change in weather conditions.
   闪光弹是因天气突然变化而触发的。