Untapped reserves of oil and minerals are thought to lie beneath the desert.据认为沙漠底下有尚未开采的石油储备和矿藏。Mongolia, although poor, has considerable untapped resources of oil and minerals.蒙古虽然穷，但有大量尚未开采的石油和矿产资源。The plants of the Australian outback represent a vast untapped resource.澳大利亚内地的植物是一大片未开采的资源。