Food companies use them to lock in prices of commodities like wheat or beef.

食品公司用他们锁定例如小麦或牛肉这些商品的价格。

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Did Marx not say that, over time, the prices of commodities more or less corresponds to their actual value?

马克思是否说过，随着时间流逝，商品的价格会或多或少地同他们的实际价值趋向一致？

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And the prices of commodities that China imports such as oil and coal continue to climb, up 30 per cent in the past three months.

中国进口石油和煤炭等大宗商品价格持续攀升——过去3个月的涨幅为30%。

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"And we all understand that there are fixed household budgets and also given the fact that generally prices of essential food commodities have taken a major increase."

VOA: standard.2009.09.19

That has led to a fall in demand and prices of commodities such as iron ore.

BBC: Fortescue mine in Australia

In the meeting, I asked what impact the rapidly rising prices of commodities was having on profit margins.

FORBES: Commodity Bubble Redux In Full Effect

The economies are growing, and a lot of their growth and their economies depend on the availability and prices of commodities.

WSJ: Managing in Asia: Hariharan; Singapore Mercantile Exchange Finds the Pulse of Commodities Trading