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A robot riding a bicycle crosses an "S"-shaped bridge at the tenth China Hi-Tech Fair held in Shenzhen, Guangdong Province on Sunday, October 12, 2008. The robot was produced by Japanese manufacturers and is outfitted with ultrasonic sensors, gyro sensors and vibration sensors. The sensors transmit signals to the computer, to easily control the robot's speed and direction. [Photo: Xinhua]
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![A robot riding a bicycle crosses an 'S'-shaped bridge at the tenth China Hi-Tech Fair held in Shenzhen, Guangdong Province on Sunday, October 12, 2008. The robot was produced by Japanese manufacturers and is outfitted with ultrasonic sensors, gyro sensors and vibration sensors. The sensors transmit signals to the computer, to easily control the robot's speed and direction. [Photo: Xinhua]](http://images.china.cn/attachement/jpg/site1007/20081013/001109b42f980a5d297b09.jpg "A robot riding a bicycle crosses an 'S'-shaped bridge at the tenth China Hi-Tech Fair held in Shenzhen, Guangdong Province on Sunday, October 12, 2008. The robot was produced by Japanese manufacturers and is outfitted with ultrasonic sensors, gyro sensors and vibration sensors. The sensors transmit signals to the computer, to easily control the robot's speed and direction. [Photo: Xinhua]")