Columbium
n. [化]铌
🗣️ 情景例句
I know the owner very well.
我和老板很熟。
Would you like a cigarette?
你要不要吸烟？
Good afternoon! I've come to return your pan. Thank you very much for lending it to me.
下午好！我来还你锅。非常感谢你能把锅借给我。