Stockpiles of crude oil and petroleum products in the U. s. swelled to an all-time high in the week ending Aug. 6, while China, the primary engine of demand growth, cut back on its oil imports.

美国8月6日当周的原油和成品油库存量跃至创纪录的高点，而作为世界石油需求主要推动因素的中国，却减少了自己的石油进口。

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In 2011 through Nov. 30, China's oil imports from Iran rose roughly 30% from the year-ago period.

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But during the next four years, China's oil imports will double as the Chinese give up their bicycles.

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Libyan oil last year accounted for just 3% of China's crude imports, but Chinese oil companies are keen to get bigger stakes.

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