每人每天饮用水需要量为2 -4升，但是生产一个人每日口粮所需要的水为2000至5000升。
The daily drinking water requirement per person is 2-4 litres, but it takes 2 000 to 5 000 litres of water to produce one person's daily food.
每人每天饮用水需要量为2 -4升，但是生产一个人每日口粮所需要的水为2000至5000升。
The daily drinking water requirement per person is 2-4 litres, but it takes 2 000 to 5 000 litres of water to produce one person's daily food.
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