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The world population hit 8 billion on Tuesday, according to the United Nations World Population Prospects1 2022.
根据联合国发布的《2022年世界人口展望》，世界人口在2022年11月15日达到80亿。
It is "a milestone2 in human development," said the UN press release. "This unprecedented3 growth is due to the gradual increase in human lifespan owing to improvements in public health, nutrition, personal hygiene4 and medicine."
联合国在新闻稿中说，这是人类发展史上的一个里程碑。全球人口前所未有的增长归因于公共卫生、营养、个人卫生以及医药的改善使人类寿命逐渐延长。
While it took the global population 12 years to grow from 7 to 8 billion, it will take approximately 15 years, until 2037, for it to reach 9 billion, a sign that the overall growth rate of the global population is slowing, said the release.
新闻稿称，全球人口从70亿增长到80亿花了约12年时间，而到2037年达到90亿将需要大约15年的时间，这表明全球人口的总体增长速度正在放缓。
"The milestone is an occasion to celebrate diversity and advancements5 while considering humanity's shared responsibility for the planet," said UN Secretary-General Antonio Guterres.
联合国秘书长古特雷斯表示，这是庆祝多样性和进步的时刻，也是人类思考对地球负起共同责任的时刻。
"It is also the result of high and persistent6 levels of fertility in some countries," added the report.
报告称，一些国家持续的高生育率也推动了人口快速增长。
Countries with the highest fertility levels tend to be those with the lowest income per capita. Global population growth has therefore over time become increasingly concentrated among the world's poorest countries, most of which are in sub-Saharan Africa, read the release.
生育率高的国家往往是人均收入低的国家。随着时间推移，全球人口增长越来越集中在世界上最贫穷的国家，其中大多数在撒哈拉以南非洲。
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