smokeless powder

例句：

1. 1. The scientist used a special type of smokeless powder to create the explosive device.
   这位科学家使用了一种特殊的无烟火药来制造这个爆炸装置。
2. 2.In ancient times, smokeless powder was often used in military tactics.
   在古代，无烟火药经常被用于军事战术中。
3. 3.The explosion caused a massive firestorm and destroyed much of the surrounding area.
   爆炸引发了一场大火，周围地区遭受了严重破坏。