noun 下载 🔗分享 赤铁矿, 红矿。 An iron ore, mainly peroxide of iron, Fe2O3. Examples : "The shiny, reddish-brown color of that rock indicates it's likely hematite, an iron ore. " 那块岩石闪亮的红棕色表明它很可能是赤铁矿,一种铁矿石。 geology material mineral chemistry substance 与AI对话词汇游戏阅读练习