self-propelled

adjective

moved forward by its own force or momentum
自身の力か運動量によって進まれる
- a self-propelled egotist
  自己推進の利己主義者
- the arms program is now self-propelled
  兵器プログラムは今や、自走である
containing within itself the means of propulsion or movement
それ自体の中に、推進または運動の手段を含む
- a self-propelled vehicle
  自走式の車

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