"It really raises the question of what should be considered normal ageing," says Kenneth Manton, a demographer from Duke University in North Carolina.
北卡罗来纳州杜克大学人口统计学家肯尼斯·曼顿说：“这确实引发了一个问题，即什么是正常的老龄化。”
After we turn 60, taste and smell gradually decline, partly as a result of the normal ageing process.
我们60岁以后，味觉和嗅觉逐渐下降，部分因为正常的衰老过程。
Mild cognitive impairment is the stage between normal ageing and dementia, with symptoms including mild memory or mental problems but no significant disability.
轻度认知障碍介于正常老化和老年性痴呆状况之间，有轻度意识或精神问题，但是没有明显疾病。
They hope this could be used to develop a drug treatment to slow the normal decline in memory associated with ageing, or even improve memory in people who are very old.
他们希望这种化合物可以用来发明一种药物治疗，放慢由于变老造成的正常记忆衰退速度，甚至提高老年人的记忆力。
Ageing decreases the body's ability to restore and manufacture normal cartilage.
老龄化降低了身体的能力，以恢复和生产的正常软骨。
Jessica Andrews-Hanna, the study leader, said that, although some deterioration in intra-brain communication was a normal consequence of ageing, there were some exceptions.
研究负责人杰西卡·安德鲁斯•哈纳(Jessica Andrews - Hanna)表示，虽然大脑内部交流通常随着年龄增长出现衰退，但也有一些例外。
The ageing characteristics of sealed oxide film at normal temperature are studied.
通过试验，研究了常温封孔氧化膜的陈化特性；
The ageing characteristics of sealed oxide film at normal temperature are studied.
通过试验，研究了常温封孔氧化膜的陈化特性；
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