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水在人体内占体重的65％～72％,细胞的主要成分是水。人体的各种生理活动和体内发生的一切生物化学变化,都离不开水。人体内的养分和废物须溶解在水中才能运输,从食物的分解到细胞的生长,都需要水才能完成各项生命活动。
Water accounts for 65% to 72% of body weight in humans, and the main component of cells is water. The body’s various physiological activities and all the biochemical changes that take place in the body are inseparable from the water. Nutrients and wastes in the human body must be dissolved in water before they can be transported. From the breakdown of food to the growth of cells, water is required to complete all life activities.