English-Chinese/The human body contains from 55% to 78% water

The human body contains from 55% to 78% water, depending on body size. To function properly, the body requires between one and seven liters of water per day to avoid dehydration; the precise amount depends on the level of activity, temperature, humidity, and other factors.

人体含有55％至78％的水，具体取决于体型。 为了正常运作，身体每天需要1到7升水，以避免脱水; 精确的量取决于活动水平，温度，湿度和其他因素。