火药

例句：

1. 1. The ancient Chinese invented gunpowder for military purposes.
   古代中国人为了军事目的发明了火药。
2. 2. Fireworks are made from gunpowder and can be very loud.
   烟花是用火药制成的，声音很大。
3. 3. The explosion of gunpowder is a powerful force that has been harnessed for centuries.
   火药爆炸是一种强大的力量，几个世纪以来已经被利用。