A diet lacking in nutritional value will not keep a person healthy.

缺乏营养价值的饮食不能维持人的健康。

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By making a person healthy you can make his life more happy but not fearless.

通过保持健康，你能让一个人生活得更加快乐，却不能让他无畏地生活。

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That is because they watch their diet and stay active, Activity for the mind and for the body combined with a sensible diet can keep a person healthy well into later years.

这是因为他们小心饮食，保持乐观。精神和身体活动性相结合，再加上合理的饮食可以使一个人在老年时身体健康。

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But in a small,short person, Skinner says,just 3 kilograms can make the difference between a healthy weight and obesity.

VOA: standard.2010.03.09

We knew what made a person healthy: sleeping with the windows open and drinking three glasses of whole milk a day.

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By the '90s, it took a shrewd business-person with a healthy dose of optimism to see the potential in these ruins.

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It is often said that, under ideal conditions, a young, healthy person can see a candle flame from 30 miles away.

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