gunpowder

/ˈgənˌpaʊdər/

a mixture of potassium nitrate, charcoal, and sulfur in a 75:15:10 ratio which is used in gunnery, time fuses, and fireworks

中文释义：火药

The invention of gunpowder revolutionized warfare in medieval times.

火药的发明在中世纪彻底改变了战争方式。

Fireworks displays rely on gunpowder to create colorful explosions in the sky.

烟花表演依靠火药在天空中制造五彩斑斓的爆炸效果。