Columbium dioxide
[化] 二氧化铌
🧩 词语组成解析
n. [化]铌
🗣️ 情景例句
Whose turn is it to wash the dishes today?
今天轮到谁洗碗？
Change the subject.
说点别的吧！
What does she have to do?
她得做什么？