ferruginous manganese ore

例句：

1. 1.The iron ore is ferruginous, which makes it suitable for making steel.
   这种铁矿石是铁锈色的，因此适合用来炼钢。
2. 2. The old car was covered in rust, and the paint had faded.
   那辆旧车满是铁锈，油漆也褪色了。
3. 3.The rocks are ferruginous, and they have been used for centuries to make bricks.
   这些岩石是铁锈色的，它们被用来制作砖块数百年。