Columbous compound
[建] 三价铌化合物
🧩 词语组成解析
[建] 三价铌, 亚铌
🗣️ 情景例句
Where did you find the dog?
你在什么地方找到这只狗的呢？
A friend is a second self.
朋友是另一个我。
I would like to ask you about some stamps.
我想问问有关一些邮票的事。