Oryctologist
矿物学专家
🗣️ 情景例句
from the first time you stayed with us.
自从你们第一次在我们这里住开始
My sister worked as a secretary before she got married.
在她结婚了以前，我的姐姐为一位秘书。
What time will the next train leave?
下一班火车什么时候开？