其一是大家熟知的低出生率和人口减少的地区。
One is the familiar place of low fertility and population decline.
人类人口减少的唯一时间段是1347年之后的数年，即黑死病在欧洲蔓延期间。
The only time the human population declined was in the years following 1347, the start of the of the plague 'Black Death' in Europe.
企业需要让更多的老人、妇女投入工作，以针对性地解决工作年龄的人口减少的问题。
Businesses needed to bring more old people and women into jobs, to counter the decline in the working-age population.
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