Oil and gas producers in emerging Asia are piling into North America’s booming unconventional energy sector, making investments in shale gas and oil sands projects worth at least $20bn in the past two years.
亚洲新兴国家的油气生产商正争相涌入北美迅速发展的非传统能源行业，过去两年对页岩气和油砂矿项目的投资总额至少达到200亿美元。
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