But cera cautions that developed nations will hardly be through with oil anytime soon .

但是cera提醒发达国家在任何时间并不能很快会抛弃石油。

Global demand will nonetheless grow , fueled mostly by developing nations , cera finds .

cera发现全球的石油需求仍会增长，主要供应给发展中国家。

By 2030 , according to ihs cera , a firm of consultants , the tar sands should supply more than one-third of america 's imported oil .

到2030年，根据剑桥能源咨询公司（ihscera，一家咨询公司）的估计，美国进口石油的三分之一以上将来自焦油砂。

" The emerging energy stimulus is really driven by energy security and by climate change , " said zhou xizhou , associate director at ihs cera in beijing .

“目前呼之欲出的能源刺激措施，实际上受到能源安全和气候变化的推动，”美国剑桥能源咨询公司（ihscera）驻北京的副总监周希舟表示。

In the third quarter , costs were still rising at annual rates of 19 per cent in the upstream industry oil and gas production and 12 per cent in the downstream refining industry , the ihs cera index said .

ihscera指数显示，去年第三季度，上游工业（即油气生产）的成本仍在以19%的年率增长，而下游炼制工业则在以12%的速度增长。