an oxide of iron that is strongly attracted by magnets
同义词：magnetic iron-ore
magnetite详细解释
mag.net.ite n.（名词）The mineral form of black iron oxide, Fe3O 4, that often occurs with magnesium, zinc, and manganese and is an important ore of iron. 磁铁矿：黑色氧化铁矿，Fe3O 4，经常和镁、锌以及锰共生，是一种重要的铁矿石
