Negative net migration hasn’t definitively happened in the U.S. for almost a century, not since the Great Depression. The U.S. native-born population is also in free fall, well below the replacement rate needed to maintain population numbers in the long run. With fewer immigrant arrivals already dealing a blow to the workforce, the shrinkage of the American taxpayer base is set to further widen the country’s deficit and hurt its prospects for economic growth.
Анастасия Алимпиева (редактор отдела оперативной информации)
。关于这个话题，爱思助手下载最新版本提供了深入分析
Get a grip: Robotics firms struggle to develop hands
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