In certain locations things were dominated by certain cereals; rice in Asia, wheat in Europe, sorghum and millet in Africa, and maize in the New World.

不同的地方有不同的主食，比如亚洲主食米饭，欧洲主食小麦，非洲主食高粱和小米，美洲主食玉米。

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According to farm scientists at Cornell University, cultivating one hectare of maize in the United States requires 40 litres of petrol and 75 litres of diesel.

康奈尔大学的农业科学家称，在美国种植一公顷的玉米需要40升汽油和75升柴油。

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Brazil's sugarcane ethanol performs much better than ethanol made from maize in that respect: Shell claims it produces 70% less carbon dioxide than petrol, mile for mile.

在减少排放温室气体方面，巴西的甘蔗造乙醇表现比玉米造乙醇好得多：壳牌声称，汽车每英里所耗燃料，甘蔗造乙醇比汽油产生的二氧化碳少70%。

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Researchers compared the use of fertilizer in three areas that grow maize as a major grain: China,Kenya and the United States.

VOA: special.2009.07.28

In certain location things were dominated by certain cereals; rice in Asia, wheat in Europe, sorghum and millet in Africa, and maize in the New World.

不同的地方有不同的主食,比如,亚洲主食米饭,欧洲主食小麦,非洲主食高粱和小米,美洲主食玉米

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

By the time of Columbus maize had already become the staff of life in the New World.

在哥伦布时期,玉米已成为美洲大陆的主食

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

EG's line of reasoning is based on the outstanding importance of maize in the Mayan culture.

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Already, as the waters recede, Mozambican peasants have been rushing back to plant beans and maize in the silt.

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The team commented that the scarcity of macroscopic remains was in marked contrast to an abundance of microscopic evidence of maize in the guise of maize pollen samples collected from soil at the sites.

BBC: Maize was key in early Andean civilisation, study shows