Schalfnerite
铜钒铅锌矿
🗣️ 情景例句
He grew up happily in a small village.
他在小村庄里快乐地长大。
We must make it clear from the very beginning that competitive quotations are acceptable.
必须一开始就讲清的是，有竞争力的报价可以接受。
Hi, Lin Tao! What are you going to do on Sunday?
嗨，林涛！星期天你打算干啥？