Robots Look for Broken Sidewalks

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Taiwan has robots in some restaurants. But it does not have them on sidewalks. In five cities in the U.S., new robots are moving on sidewalks. 台灣有些餐廳會僱用機器人，而在美國五座城市，新式的機器人卻出現在人行道上。 Click HERE for the full transcript!