由于地下水位下降，灌溉井干涸，居于世界之首的中国小麦产量，已经从1997年1.23亿吨的峰值下降了8%。

As water tables have fallen and irrigation wells have gone dry, China's wheat crop, the world's largest, has declined by 8% since it peaked at 123 million tons in 1997.

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但巴格达官员说，伊拉克有必要确保英国石油顺利进入该国。由于石油产量下降和国际原油价格走低，伊拉克面临着现金不足的难题。

But Baghdad officials say Iraq — suffering from a cash crunch due to faltering oil production and lower global crude prices — has an interest in making BP's entry into Iraq smooth.

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由于国有垄断巨头墨西哥国家石油公司的效率不高，石油产量也急剧下降。

Oil output is plunging because of the inefficiencies of Pemex, the giant state oil monopoly.

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