Wittichenite
脆硫铜铋矿, 硫铋铜矿
🗣️ 情景例句
I'd like to make an appointment to discuss a question.
我想约个时间讨论个问题。
It is our permanent principle that contracts are honored and commercial integrity is maintained.
重合同、守信用是我们的一贯原则。
What are you doing tomorrow?
明天你干什么？