One trigger for an ageing spurt is a period of stress - recent divorce, illness, and bereavement or work problems.
而引发衰老突发的一个诱因是一段时间的精神紧张——最近的离婚、生病，或者亲人去世、工作麻烦等。
Even "ageing" Europe and America ended the period with fewer dependents than at the beginning.
即使“老龄化”的欧洲和美国在这个时期结束时受抚养老弱的数目也比开始时要少了。
They see the period of ageing as one distinct from that of early development.
他们把衰老视为与早期发育不同的另一个时期。
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