Laurionite
[矿]羟氯铅矿
🗣️ 情景例句
Do you have any questions in mind about them, Mr. Martin?
你还有什么问题吗，马丁先生？
A new bicycle is out of the question - we can't afford it.
买新自行车的事谈不上 —— 我们买不起。
He devoted his life to the study of science.
他把毕生献给科学研究。