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In the future , when people want to wash the car, they have 3 steps.
1. Take picture to Parked the car at the station by hand , and then ,
the form of projection .
2. You can touch the projection then Car washer machine can follow to
touch to yourhand and start high pressure shower .
3. When the hand is removed , high pressure water to stop.
朝陽科技大學
台灣台中, Taiwan
Lai pei yi