Agricultural societies cannot exist without staple crops.

农业社会的存在离不开主粮作物。

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Dutch agriculture was modernized and commercialized new crops and agricultural techniques raised levels of production so that they were in line with market demands.

荷兰的农业实现了现代化，新型的商业化农作物和农业技术提高了农产量，使之能够满足市场的需求。

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Many crops were developed during the agricultural revolution when human societies made the transition from nomadic hunter-gatherers to horticulture and agriculture.

许多农作物的种植都是在农业革命期间发展起来的，当时人类社会正从游牧生活的狩猎和采集活动向园艺和农业过渡。

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Officials in Liberia say tens of millions of caterpillars are destroying crops and polluting waterways in the country's agricultural centers.

VOA: special.2009.01.27

Melting snow provides water for rivers,electric power centers and agricultural crops.

VOA: special.2010.01.05

The agricultural economist points to the demand for locally grown crops.

VOA: special.2009.12.22

But since energy crops first stirred agricultural excitement there's been controversy over the impact of using land to grow crops to burn.

BBC: Biomass may hinder climate fight

Australia has produced some of its biggest agricultural crops in times of greatest drought.

ECONOMIST: So long as it doesn��t cost too much

The West could help in supplying seeds for new agricultural crops and equipment for food processing.

CENTERFORSECURITYPOLICY: Center For Security Policy