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         Automobile (view from below): road 
          vehicle that is motor-driven and is used for transporting people. 
          Radiator: apparatus that cools the motor. 
          Power steering: mechanism that automatically amplifies the movements 
          of the steering wheel. 
          Line shaft: axle on which mechanical power is transmitted to 
          the wheels. 
          Exhaust system: network of pipes through which spent gas is expelled. 
          Differential: gear system connecting the two axles of a car. 
          Gas tank: container used for storing extra gas. 
          Rear axle: bar that crosses the bottom rear part of a vehicle. 
          The rear wheels are attached to its ends. 
          Shock absorber: device for reducing shocks. 
          Tire: band of rubber composed of a casing of textile and iron, 
          covered with rubber and containing a air tube. 
          Hydraulic converter: device using static energy to modify the 
          electric current. 
          Transmission: device carrying engine power to axles. 
          Crankcase: metal envelope protecting the clutch. 
          Oil pan: liquid tight metal envelope containing oil. 
          Master cylinder: type of container in which the piston is moving. 
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