Niobus
三價鈮的
??? 情景例句
He is an orphan, so he is not sure which family name he should have.
他是個孤兒，因而不知道他自己姓什么。
Who is the auther of this novel?
誰是這本小說的作者？
The answer is easy! said the doctor.
“答案很簡單！”醫生說。