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成年人一般每天要排出水分2500毫升,而人们每天平均从固体食物中可获取1000毫升的水分,蛋白质、糖类和脂肪的新陈代谢可供300毫升水,为保证人体内水的平衡,必须从液态饮料和白开水补上1200毫升水分,才基本上达到平衡。水占人体体重的60%至70%,而且水在人体内具有多项功能,如果人体只要损耗5%的水分,人便立即感到疲劳、烦躁、头痛甚至头晕乏力。所以一个健康成年人日饮水量至少为1200毫升。
Adults generally discharge 2500 milliliters of water a day, while people get an average of 1000 milliliters of water per day from solid foods. The metabolism of protein, carbohydrates and fats can provide 300 milliliters of water. To ensure the balance of water in the body, And boiled water make up 1200 ml of water, it basically reached the balance. Water accounts for 60% to 70% of human body weight, and water has many functions in the human body. If the human body consumes only 5% of water, people feel fatigue, irritability, headache and dizziness and fatigue immediately. So a healthy adult drinking water at least 1200 ml.