flare gun

例句：

1. 1. The flare gun lit upthe night sky with a brilliant display ofcolors.
   闪光枪在夜空中绽放出绚丽多彩的光彩。
2. 2. The children were excited tosee the fireworks that would be launched bythe flare gun.
   孩子们兴奋地期待着由闪光枪发射的烟花。
3. 3. The flare gunwas used to signal the start of thefireworks show.
   闪光枪被用来作为烟火表演开始的信号。