世界人口达到80亿
the world population hit 8 billion

The world population hit 8 billion on Tuesday, according to the United Nations World Population Prospects 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 milestone in human development," said the UN press release. "This unprecedented growth is due to the gradual increase in human lifespan owing to improvements in public health, nutrition, personal hygiene 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。