常見例句用作名詞 (n.)It sensed a mineral called hematite that forms under wet conditions.它也探測到了一種稱作赤鐵礦的，在潮濕環(huán)境中形成的礦藏。Iron ores of greatest economic interest contain magnetite and hematite.最具有經(jīng)濟價值的鐵礦包括磁鐵礦和赤鐵礦。 返回 hematite