The brain drain reinforces a demographic trend.

人才流失加强人口统计学的倾向。

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And then, of course, there's the long-term demographic trend.

接下来，当然是长期的人口统计动向。

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This could happen either when the favourable demographic trend worsens or urbanisation ends.

当有利的人口统计学趋势恶化，或城市化进程结束时，都可能出现这种局面。

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This demographic trend will have a profound impact on medical costs, businesses, worker efficiency and productivity.

FORBES: Tara A. Cortes

Several factors have fed this growth, apart from the general demographic trend in favour of the southern and western states.

ECONOMIST: Urban sprawl

Moreover, urbanization is hardly the only demographic trend sweeping over China.

WSJ: China's Population Shifts to Cities