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1·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。

2·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。

3·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。

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

旱地农业，浇灌农业和畜牧业是美国西部大平原地域的首要勾当。

5·Technology means a lot of things: drip irrigation, no-till farming, more efficient ways to use fertilisers and kill pests.

科技意味着许多事情：滴灌、免耕耕种，化肥及农药的更有效使用。

6·Third, circulating water is used for industrial purposes over and over in factovies and treated sewage water is used for irrigation in farming land.

第三，循环水用于工业用途，遍地和处理的污水用于灌溉农业土地。

7·The arable land not suitable for farming, irrigation, and drainage.

一耕地丘形不适于农事工作或不利于灌溉、排水者。

8·Third, circulating water is used for industrial purposes over and over in factories and treated sewage water is used for irrigation in farming land.

第三，循环水用于工业用途，在工厂和处理过的污水用于灌溉的农业土地。

9·Dry farming; dryland farming a system of producing crops in arid and semiarid regions without the use of irrigation. Frequently alternate years of fallow and cropping are practiced.

旱地耕作法指一种在干旱或半干旱土地上不使用灌溉方法生产作物的耕作制度。常常采用一年休耕、一年种植的方法。

10·As aquifers are depleted and irrigation Wells go dry, farmers either revert to low-yield dryland farming or, in the more arid regions, abandon farming altogether.

随着蓄水层的枯竭和灌溉井的干涸，农民不得不改种低产的旱地作物，在更为干旱的地区，他们干脆放弃耕作。