The most serious urban disease in the 21st century is mental illness.

21世纪最大的城市病就是精神疾病。

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Due to the beautiful surroundings and ancient atmosphere, Lijiang is the best place to treat urban disease.

丽江最适合治疗城市病症，因为这里有美丽的景色和古老的氛围。

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Urban problems and urban disease, accompanied with the pace of urbanization, now has been increasingly troubled our times.

城市问题与城市病，一直与城市化的步伐相伴随，现在正日益困扰着我们这个时代。

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McKeown's thesis produced a strong reaction from those who thought his aim was political to rebalance modern health-care from cure to prevention and that he had missed statistical quirks, like the stagnation of the trend toward less disease at a time when urban populations were booming.

WSJ: Matt Ridley on Infectious Diseases and Standards of Living | Mind & Matter