如果减少活动，健康的人能够只靠平常摄入的食物量的一半就能活更长的时间，并且可以好几天不吃东西。
If activity is reduced, healthy people can survive on half their usual food intake for an extended period and without any food for many days.
看门的对她丈夫说：“上面的老人不起床了，也不吃东西，他活不多久了。”
The portress said to her husband: — "The good man upstairs yonder does not get up, he no longer eats, he will not last long."
在冬天，有些动物几个月不吃东西也能活下来。
In winter, some animals manage to live without eating for many months.
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