奥巴马星期五在宾夕法尼亚州匹兹堡的卡内基-梅隆大学发表讲话，并观看微型机器人水下探索和检查下水管道是否有泄漏和裂纹。
He gave the address at Carnegie Mellon University in Pittsburgh, Pennsylvania, where on Friday he watched a display of mini-robots that explore water and sewer pipes looking for leaks and cracks.
宾夕法尼亚州匹兹堡市卡耐基梅隆大学纳米机器人实验室主任梅丁·斯蒂正在使用细菌作为生物马达来推动小球穿过液体。
Metin Sitti, director of Carnegie Mellon University's NanoRobotics Lab in Pittsburgh, Pennsylvania, is using bacteria as biological motors to propel small spheres through fluids.
这种全面看待妇女的口腔健康是“非常聪明的，”宾夕法尼亚州匹兹堡大学的牙医和遗传学家Alexandre Vieira说。
This comprehensive view of women's oral health is "very smart," says dentist and geneticist Alexandre Vieira of the University of Pittsburgh in Pennsylvania.
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