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Gunpowder
01
火药
a type of powder that is explosive, used in making bullets, bombs, etc.
例子
The invention of gunpowder revolutionized warfare by enabling the development of firearms and cannons.
Historically, gunpowder was used in early rocket propulsion experiments before the development of modern solid and liquid fuels.
In fireworks displays, gunpowder is used to create colorful explosions and effects in the sky.
