Titanoniobite
鈦鈮鐵礦
??? 情景例句
I think we should leave the door open. it's boiling in there.
我覺(jué)得我們應(yīng)該把大門(mén)敞著，屋里太熱了。
What day is tomorrow?
明天是星期幾？
You haven't finished your lunch!
你沒(méi)吃完午飯！