A minimum of 15 litres per person per day should be provided as soon as possible.

应尽快提供每人每天最少15升水。

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Photo of water bottles. The minimum drinking water supply is 1 gallon per person per day.

每人每天最低摄水量是1加仑。

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Store at least 1 gallon of water per person per day and be prepared for a 72-hour period.

每人每天至少需储备1加仑(3.8升)的水，并按此标准一次备够72小时之用。

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Food and Agriculture Organization, there is enough food produced to provide everyone in the world with 2, 720 kilocalories per person per day.

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Americans throw out about 250 million tons of it a year, according to the U.S. Environmental Protection Agency, some 4.4 pounds per person per day.

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Despite advances in efficient toilets and faucets, residential water use in the state remains where it was in 1972, at 220 gallons per person per day.

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