农民用水来种植蔬菜、水稻、玉米等农作物，工厂用水来制造产品。
Farmers use water to grow vegetables and crops like rice and corn, factories use water to make products.
一些大型的种植工厂一年可以生产300万颗蔬菜。
Some factories are vast--and can produce three million vegetablesa year.
它将在2011年开始运作。那时，这个15 .，000平方英尺的屋顶工厂每年将生产30吨的蔬菜，然后以Gotham Greens的商标在当地商店销售。
When it opens in 2011, the 15, 000 square-foot rooftop facility will produce 30 tonnes of vegetables a year which will be sold in local stores under the Gotham Greens brand name.
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