3.体内外水的运动 (Water movement between outside-inside of body) Daily intake Daily output (ml/day) (ml/day) Drinking 1300 Urine 1500 Water in food 900 Lungs 400 Water of oxidation 300 Skin 500 Stool 100 Total 2500 Total 2500 Daily intake (ml/day) Daily output (ml/day) Drinking 1300 Urine 1500 Water in food 900 Lungs 400 Water of oxidation 300 Skin 500 Stool 100 Total 2500 Total 2500 3. 体内外水的运动 (Water movement between outside-inside of body)