在一个对于单一群体来说非常大的系统里，有着许多决策层：例如萨赫勒的游牧民族，过去有着许多互相重叠的非正式权威遍布于尼日尔河上上下下。
In systems too large for a single group, there are layers of decision-making: the nomads of the Sahel, for example, used to have overlapping informal authorities up and down the Niger river.
当游览格伦作品之一，圣贝纳迪诺市如今人烟荒芜的卡罗塞勒商城时，通讯记者遇到一群中年墨西哥人正在学习美国公民入籍测试。
On a trip to one of Gruen’s creations, the now-desolate Carousel Mall in San Bernardino, your correspondent encountered a group of middle-aged Mexicans studying for the American citizenship test.
当游览格伦作品之一，圣贝纳迪诺市如今人烟荒芜的卡罗·塞勒商城时，通讯记者遇到一群中年墨西哥人正在学习美国公民入籍测试。
On a trip to one of Gruen's creations, the now-desolate Carousel Mall in San Bernardino, your correspondent encountered a group of middle-aged Mexicans studying for the American citizenship test.
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