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gun; firearm
wooden pole that wrestlers strike in practice
puffer fish
戦国時代に鉄炮が日本に伝わった。
Firearms were introduced to Japan during the Sengoku period.
博物館に展示された鉄炮は三百年前のものだ。
The gun displayed at the museum is from three hundred years ago.
鉄炮の発明が戦争のやり方を大きく変えた。
The invention of firearms greatly changed the way wars were fought.