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1、Real World Robots When you think of a robot, do you envision a shiny, metallic device having the same general shape as a human being, performing humanlike functions, and responding to your questions in a monotone voice accentuated by high-pitched tones and beeps? This is th
2、e way many of us imagine a robot, but in the real world, a robot is not humanoid at all. Instead a robot often is a voiceless, box-shaped machine that efficiently carries out repetitive or dangerous functions usually performed by humans. Today’s robot is more than an automa
3、tic machine that performs one task again and again. A modern robot is programmed with varying degrees of artificial intelligence—that is, a robot contains a computer program that tells it how to perform tasks associated with human intelligence, such as reasoning,drawing con
4、clusions, and learning from past experience. A robot does not possess a human shape for the simple reason that a two-legged robot has great difficulty remaining balanced. A robot does, however, move from place to place on wheels and axles that roll and rotate. A robot even
5、has limbs that swivel and move in combination with joints and motors. To find its way in its surroundings1, a robot utilizes various built-in sensors. Antennae attached to the robot’s base detect anything they bump into. If the robot starts to teeter as it moves on an incli
6、ne, a gyroscope or a pendulum inside it senses the vertical differential. To determine its distance from an object and how quickly it will reach the object，the robot bounces beams of laser light and ultrasonic sound waves off obstructions in its path2. These and other senso
7、rs constantly feed information to the computer, which then analyzes the information and corrects or adjusts the robot’s actions. As science and technology advance, the robot too will progress in its functions and use of artificial-intelligence programs. 词汇： envision v. 想象，预
8、想 device n. 装置 accentuate v. 强调，重读 artificial intelligence n. 人工智能 limb n. 臂 anten
