gunpowder
n. 火药；有烟火药
例句
The introduction of gunpowder gradually made the bow and arrow obsolete, particularly in Western Europe
火药的使用使弓箭逐渐被淘汰，特别是在西欧。
The potentially lethal device was made from a length of hose packed with gunpowder, primers, and shrapnel.
这个能致命的装置是用一根装满火药、引信和弹片的软管做出来的。
《柯林斯英汉双解大词典》
The 24 Solar Terms is regarded as China's fifth great invention, after papermaking, printing, the compass and gunpowder.
二十四节气被认为是中国继造纸术、印刷术、指南针和火药之后的第五大发明。
