red iron oxide in lump

例句：

1. 1.The red iron oxide is used to produce pigments for paints and dyes.
   这种红色氧化铁用于生产颜料和染料。
2. 2. The red iron oxide was found in the ancient ruins of a temple.
   这种红色氧化铁在一座古庙的废墟中被发现。
3. 3. The red iron oxide is a valuable resource for metallurgy.
   这种红色氧化铁是冶金工业的重要资源。