Petscheckite
铌钽铁铀矿
🗣️ 情景例句
I'd appreciate that.
谢谢你让我使用电话。
If you're sure you're not in a hurry, I can use a little help.
如果你真的不忙的话，我可能要你帮个小忙。
You have my word.
我保证。