Some experts have declared that at current rates all the known oil in the world will be used up in 40 years. The trend of a rising price of oil thus seems hard to avoid.
一些專家早已發出警告，以目前的消耗速度來推估，全球石油將在 40 年後耗盡，油價攀高已是難以扭轉的趨勢。