Columbium dioxide
[化] 二氧化铌
🧩 词语组成解析
n. [化]铌
🗣️ 情景例句
You keep getting fatter and fatter.
你一天比一天胖。
How much do I owe you?
我欠你多少钱？
Come in and have a seat.
请进来坐。