Fluoniobate
氟铌酸盐
🗣️ 情景例句
What's going on?
你在忙些什么？
The poor are rich when they are satisfied.
贫能知足即为富。
in order that an individual or a group of individuals may earn as much money as possible.
为的是让某个个人或某一部分人尽可能多地赚钱。