模仿文本： The idea that supplies of natural gas could be running ahead of demand would have been inconceivable a few years back. Indeed, these new unconventional reserves are bringing about a transformation of the world energy market as profound as happened back in the 70s - that's when the cartel of oil-rich nations OPEC was formed, and oil prices increased sharply. 

 

译文： 几年前我们从未想过天然气会供过于求。但目前，这些新的非常规能源储备正给世界能源市场带来深远的转变，正如上世纪70年代，石油富足国家联盟成立石油输出国组织之时，油价飞速攀升。