美国人口数量2020总数:增长率为何创新低?美国2020年人口增长创历史新低,探究原因分析
The total population of the United States in 2020: Why did the growth rate hit a new low? The population growth of the United States in 2020 hit a record low. Let's explore the reasons and analyze them
以上为机器翻译结果，长、整句建议使用 人工翻译 。