They say another factor is prolonged freezing weather in parts of the United States, Europe and Asia, which is boosting demand for oil products such as heating oil.

这些分析人士说，另一个原因是美国、欧洲和亚洲部分地区长时间严寒天气导致对供取暖用燃料等石油产品的需求量增加。

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Higher food prices have been fuelled by dry weather in key growing areas, competition from biofuels, rising oil prices boosting production and delivery costs and growing demand from emerging Asia.

主要种植区的干燥天气、来自生物燃料的竞争、油价上涨推高生产和交割成本，以及亚洲新兴市场需求增长，均促成了食品价格上涨。

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Commodities businesses all over the world have grown quickly off the back of that demand, making investments in mines, oil exploration, and boosting soybean production in Brazil, among other things.

BBC: How China drives commodities down