The oil and gasproducer 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。
2
Russia is the world's biggest natural gasproducer 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。
3
The exploitation of shale gas has revolutionized American energy markets, helping the U.S. in 2009 to overtake Russia as the world's largest gasproducer.