noun 下载 🔗分享 磁铁矿，吸铁石 A magnetic mineral, Fe3O4, one of the primary ores of iron. It has also been called lodestone. Examples : "The student used a strong magnet to pick up the tiny pieces of magnetite from the sand. " 那个学生用一块强磁铁从沙子里吸起了细小的磁铁矿碎屑。 material substance mineral geology chemistry 与AI对话词汇游戏阅读练习
