Columbium dioxide
[化] 二氧化铌
🧩 词语组成解析
n. [化]铌
🗣️ 情景例句
Are the people friendly in China?
中国的人们友好吗？
There have been a lot of changes here in the last 20 years.
在这20年里这里有很多变化。
Really? I thought you were from the States.
真的吗？我还以为你是美国人呢。