Sifbronze

例句：

1. 1.The old iron gate has turned a beautiful shade of sifbronze.
   这把旧铁门已经变成了漂亮的铁锈色。
2. 2.The car's paint is starting to show signs of sifbronze.
   这辆车的漆开始出现铁锈的迹象了。
3. 3.The metal object was left out in the rain for too long, turning it into a beautiful sifbronze.
   这个金属物体被雨淋太久，变成了美丽的铁锈色。