这是一座移民城市——该市如今38%的人口为外来人口——移民以及他们的子代在美国经历了显著的向社会上层流动。
This is a city of immigrants 38 percent of the city's population today is foreign-born and immigrants and their children have historically experienced significant upward mobility in America.
在如今日益繁忙的社会，这项研究具有重要的安全警示意义，不仅对于那些需要倒班的人来说如此，对于那些每晚睡眠不足六小时的六分之一美国人来说也一样。 。
It is work with important safety implications in an increasingly busy society, not just for shift-workersbut for the roughly one in six Americans who regularly get six hours or less of sleep a night.
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