The oil and gas producer maintains that it cleaned up any pollution for which it was responsible and that it has been unfairly targeted.

这家石油和天然气生产商坚称它已将应该由它负责任的污染清理干净了，但是被不公正地当作了诉讼的目标。

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Russia is the world's biggest natural gas producer and the European Union depends on Russian gas pumped via Ukraine for around a fifth of its total gas consumption.

俄国是全球最大的天然气生产者，而经由乌克兰供应的俄国天然气占到欧盟天然气总消费量的五分之一左右。

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The exploitation of shale gas has revolutionized American energy markets, helping the U.S. in 2009 to overtake Russia as the world's largest gas producer.

页岩天然气的探测和发现已经带来了美国能源市场的变革，使美国在2009年超越俄罗斯，成为世界上最大的天然气生产者。

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Chesapeake Energy tacked on 6.3% after the natural-gas producer said it plans to further reduce dry-gas drilling activity by 50% and to curtail its gross gas production by about 8% in response to a drop in natural-gas prices.

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China's largest offshore oil-and-gas producer Cnooc added 3.6% after its 2012 net profit fell 9.3% on-year to 63.69 billion yuan, due to rising operating costs and higher resource tax expenses.

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Devon, as an energy play, is a well-run independent oil-and-gas producer with its management very focused on enhancing shareholder value.

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