Ученые нашли необычное применение рыбамРоссийские ученые научились отслеживать загрязнение водоемов с помощью рыб
Москвичей предупредили о резком похолодании09:45，推荐阅读safew官方版本下载获取更多信息
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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.
「如今有更多美國人在工作，比我們國家歷史上的任何時刻都還要多」