Fluoniobate
氟铌酸盐
🗣️ 情景例句
Guess who I ran into today?
你猜我今天碰见谁啦？
A book is the same today as it always was and it will never change.
一本好书今天如此，将来也如此，永不改变。
However, there are undoubtedly some wrong ways,
然而，却毫无疑问地有几种错误的方法。