Columbite
[建] 铌铁矿
🗣️ 情景例句
there's a lot to do around the house,
这屋里有很多事可做，
We only live once,, but if we work it right once is enough.
我们生命只一次，好自为之一次足矣。
Hello, Jim! Help yourself to a cake.
你好，吉姆！请随便吃糕点。