Petscheckite
铌钽铁铀矿
🗣️ 情景例句
Eight pounds six.
八磅六。
If you want to be healthy, you have to stop smoking a pipe.
如果你要身体健康的话，必须停止抽烟斗。
It's just the matter of the schedule,that is,if it is convenient of you right now.
如果你们感到方便的话，我想现在讨论一下日程安排的问题。