With overly limited exploration and production of new wells, proven oil reserves have declined from nearly 50 billion barrels in the mid-1990s to 7 billion today.
尽管委内瑞拉拥有世界上最大的已探明石油储量,但该国经济几年来一直处于崩溃状态。
Despite having the world's largest proven oil reserves, Venezuela's economy has been in a state of collapse for several years.
伊朗拥有世界第三大探明石油储量,占世界总石油储量的的10%。
Iran has the world's third-largest proven oil reserves, or 10% of the world's total.
截至2005年底,尼日利亚拥有探明石油储量359亿桶,预计到2010年将增加到400亿桶。
Nigeria had proven oil reserves of 35.5 billion barrels in 2005, and planned to expand its proven reserves to 40 billion barrels by 2010.
West Asia, which holds some 65 per cent of the world' s proven oil reserves and where production is the cheapest in the world, remains virtually closed to FDI.
中东地区拥有全球已探明石油储量的三分之二。
The region has two-thirds of the world's proven oil reserves.
中东地区拥有全球已探明石油储量的三分之二。
The Middle East has two thirds of the world's known oil reserves.
非洲的撒哈拉以南地区拥有世界已探明石油储量的7%。
Sub-Saharan Africa has about 7% of proven world oil reserves.
俄罗斯有870亿桶已探明石油储量,足够再使用75年.
Russia has 87 billion barrels of proven oil reserves, enough to last it another 75 years.
沙特阿拉伯拥有世界已探明石油储量的16%,仅次于委内瑞拉。
Saudi Arabia now trails Venezuela,with a 16 percent share of world proven oil reserves.
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