Petscheckite
铌钽铁铀矿
🗣️ 情景例句
Come on!
过来！
What are you playing?
你正在玩什么？
That sounds like a good idea. I have a few friends I could ring to see if they're free.
听起来是个好主意。我可以打电话给我的几个朋友看看他们是否有空。