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Robot
 
A human-like robot holds a caution sign

Robonaut is a machine that can help humans work and explore in space or on other worlds. Image Credit: NASA

      a machine that is built to do a certain job again and again, or to do work that might be dangerous for humans



Sentences:
NASA uses robots to explore other planets.

Robots are used to paint new cars.



More Information:
http://spaceplace.nasa.gov/en/kids/robots/robot_puzzle.shtml   →