turn·ta·ble /-ˌtebəl/
  轉車,轉盤
  Turn·ta·ble n. A large revolving platform, for turning railroad cars, locomotives, etc., in a different direction; -- called also turnplate.
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  turntable
       n 1: a circular horizontal platform that rotates a phonograph
            record while it is being played
       2: a revolving tray placed on a dining table [syn: lazy Susan]
       3: a rotatable platform with a track; used to turn locomotives
          and cars