With a camera fitted into a pair of sunglasses connected to a computer, a 62-year-old blind man, identified only as Jerry, has learned to recognize objects well enough to navigate the New York City subway system independently.

• 在太阳镜上装个摄像机，再与计算机相连，就可以使62岁的盲人杰里学会很好地识别物体，并且独自在纽约巾地铁各线行走。