All agriculture damages the environment - think of all those felled forests and ploughed-up prairies, all the irrigation water, manure, tractor fuel, pesticides and fertiliser.

所有的农业都损害环境，包括你所能想到的一切——砍伐森林，垦荒草原，灌溉的水源，粪肥，拖拉机消耗的燃料，杀虫剂还有化肥等。

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Agriculture consumes two-thirds of China's water and is very inefficient — just 46 per cent of irrigation water reaches crops, compared to 70–80 per cent in developed countries.

农业消耗了中国2/3的水，而且效率非常低——只有46%的灌溉水被农作物利用，相比之下发达国家是70%到80%。

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In agriculture, it will take both better breeding-for more water efficient crops-and smarter irrigation.

在农业中，既要培养更多能高效利用水资源的优良作物品种，也要加强建设智能灌溉。

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Among these figure water-harvesting technologies and drip irrigation, as well as technologies that recycle grey water in peri-urban agriculture.

UNESCO: World Water Assessment Programme (WWAP)