“矿石”造句

我们在南美洲为一些大公司探测石油和矿石。
We dowse oil and ore in South America for big companies.

这机器每小时可以破碎多少吨矿石?
How many tons of ore can this machine crush in an hour?

他们从矿石中提炼出黄金.
They refined gold out of the ore.