Pittinite
脂铅铀矿
🗣️ 情景例句
What did you see on your vacation?
在假期中都看了些什么？
What sort of guarantee do you offer on your product?
你们提供什么样的产品保证呢？
that a series of deep soundings was obtained in the Atlantic and the first samples were collected by dredging the bottom.
才在大西洋测得一个个海水深度，同时通过挖掘海底，取得了研究海底的首批样品。