The current population of our country is about 1300000000 people. If each person wastes 1 kilogram of food a year, how many billion kilograms of food will the country waste in a year? What would you like to say to people who waste food?
我国目前人口约有1300000000人，如果按每人一年浪费1千克粮食来计算，那么全国一年会浪费多少亿千克的粮食？你想对浪费粮食的人们说些什么呢？
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