Benjaminite
铜银铅铋矿
🗣️ 情景例句
We'll offer our sale agents and purchasers many kinds of services and benefits.
我们将为代理商和买主提供多种服务和利益。
Knowing something of everything, and everything of something.
通百艺而专一长。
Education, with its cycles of instruction so carefully worked out,
教育，以其教学周期如此精心地安排，