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....
In the state of Iowa, it's been a bumper year for corn.艾奥瓦州今年玉米大丰收。The crew of the Iowa has been preparing the ship for storage.“艾奥瓦号”的船员一直都在为货物储存准备船只。In 1932, he established a school and artists' colony in Sto...