Magnetitite
磁铁岩
🗣️ 情景例句
Right this way, Mr. and Mrs. Stewart.
走这边， Stewart先生和太太。
Besides the required courses, I'm taking an elective in the Lab Science.
除必修科目外，选修科目我选了实验科学。
On the third lap, the Class 3 and Class 1 runners both ran very fast.
在跑第三圈时，3班和1班的运动员都跑得非常快。