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.

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。

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Although it probably won't win a following of apostles for the feat, Carnegie Mellon University bot Water Runner's ability to, well, walk on water, is at least worthy of a small write-up in a gadget blog, we think.

ENGADGET: The miraculous CMU Water Runner