The age of decline of interest rates will change with the economic cycle emerged, but the research of its effect on consumption is rare.

持续降息会随着经济周期的变化而出现，但其对消费的影响却很少研究。

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Cognitive decline is the loss of ability to learn new skills, or recall words, names, and faces that is most common as we age.

认知能力下降是指丧失学习新技能或回忆单词、名字和面孔的能力，这是随着年龄的增长而最常见的现象。

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It peaks in young adulthood, levels out for a period of time, and then generally starts to slowly decline as we age.

它在青年时期达到顶峰，在一段时间内趋于平稳，然后普遍会开始随着年龄的增长而缓慢下降。

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"Certainly the good news is that the rate of deaths of children under five years of age continued to decline in two thousand eight.

VOA: special.2009.09.28

The scientists say if their work is confirmed, it could lead to further research on how lifestyle choices figure in the prevention and treatment of age-related decline and diseases such as Alzheimer's.

VOA: standard.2009.12.30

What may have held that rate steady in an age of decline was the aggressive marketing of handguns to women for self-defense, which is how a great many guns are marketed.

NEWYORKER: Battleground America

It turns out the the average 30-35 year old person will experience roughly a 25 percent decline in his or her muscle strength and tone by the age of 70-75, and up to a 50 percent decline approaching the age of 90.

FORBES: Why Strength Training May Help You Live Longer

But what about the elderly and the problem of age-related decline?

FORBES: World of Warcraft May Protect the Aging Brain