The damage will be felt only in the longer term, since the main effect may be to delay the start of big infrastructure projects, from roads to irrigation schemes.

所以，损害只会在长期浮现，这将主要体现在大型基础建设项目的推迟，包括修路与灌溉项目。

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Dry farming, irrigation farming, and the cattle and sheep herding are the main activities of the Great Plains of the American West.

旱地农业，灌溉农业和牛羊牧业是美国西部大平原地区的主要活动。

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Dry farming ,irrigation farming,and the cattle and sheep herding are the main cativities of the Great Plains of the American West.

旱地农业，灌溉农业和牛羊牧业是美国西部大平原地区的主要活动。

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Countries are issuing, or at least preparing, a long list of promises to help finance research into new seeds, build irrigation canals and spread fertiliser use among small farmers (seeds, irrigation and fertilisers were the main components of the first green revolution in the 1960s).

ECONOMIST: The world food summit

Purves is very concerned about the glaciers in the Himalayan mountains that are the main source of water for irrigation and drinking in China and India, well over 2 billion people.

FORBES: 500 Million People Will Be Displaced By Glaciers Melting In Greenland And The Himalayas

The outlook for the winter wheat crop is also poor, with India's main reservoirs, a source for irrigation canals, one-third below their seasonal average.

ECONOMIST: India's water crisis