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

而科学家，大部分尚未被利用嗅觉即将会被技术进步所激。

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，世界上百分之二十二未开油和天然气矿藏都掩盖在北极冰层之下。