Petscheckite
铌钽铁铀矿
🗣️ 情景例句
Did you have dinner, Robbie?
你吃晚餐了吗， Robbie？
It is a sad house where the hen crows louder than the cock.
母鸡司晨家不兴。
When did you bring it to us?
您什么时候送来的？