When I came back, the gun was lying on the earth, its worn brass glowing in the sunlight, and she was sitting there crying.
当我回来时，那把枪正躺在地上，它那已被磨损的黄铜在阳光下闪闪发光，而她正坐在那里大哭。
2
In order to obtain rust, brown, gun-black and ancient green films on brass at room temperature, the chemical coloring process on brass in acid solution was studied.