圣地亚哥居民62岁的退休老人冈萨罗·阿尔玛戈尔（Gonzalo Almaguer）说他们（指居民们）现在很少外出，尤其是在晚上。
Residents like Gonzalo Almaguer, a 62-year-old retiree, say they hardly go out anymore, especially at night.
NPR记者玛戈特·阿德勤报道，同样的技术已经在多座城市应用。
NPR's Margot Adler reports similar technology has already been used in several cities.
本文简要介绍了阿尔戈玛钢厂二号无缝钢管轧机的自动化系统。
The article gives a brief introduction to the automation system of the above-mentioned mill.
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