Cobaltiferous
a. 含钴的
🗣️ 情景例句
What is your regular practice concerning the terms of payment?
你们一般采用什么付款方式？
If I had known her telephone number, I would have called her.
如果我知道她的电话号码，我就给她打电话了。
What's up?
有什么事吗？