2009年，俄罗斯开始取代沙特阿拉伯成为世界最大的原油生产国；而石油输出国组织（欧佩克）占世界产油量的份额已由70年代中期的54%，下降到目前的40%左右。
Russia overtook Saudi Arabia as the world’s biggest crude supplier in 2009; OPEC’s share of production has gone from around 54% in the mid-1970s to just over 40% now.
而石油输出国组织(欧佩克)占世界产油量的份额已由70年代中期的54%，下降到目前的40%左右。
OPEC's share of production has gone from around 54% in the mid-1970s to just over 40% now.
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