The US Geological Survey says 22 percent of the world's unexploited oil and gas deposits are hidden under the Arctic ice.

美国地质局示，世分之二十二的未开发的石油和天然气矿都掩盖在北极冰层之下。

Scientists say the sense of smell, until now largely unexploited, is about to be stimulated by the march of technology.

而科学示，大部分尚未被利用的嗅觉即将会被技术进步所激发。