self-propelled

• 指车辆或机械依靠自身动力装置（如发动机或电动机）自行运动，无需外力推拉。也泛指能自行移动或自主推进的物体。

Describes a vehicle or machine that moves by its own power, without needing to be pushed or pulled.

1. Containing its own power sourceB2formal

   Describes a vehicle or device that moves using its own internal power, without needing external force.

   自带动力

   • The self-propelled lawn mower made gardening much easier.
   • Modern self-propelled artillery can move quickly across the battlefield.
   • The rover is a self-propelled vehicle designed for exploring Mars.

   同义词automotivemotorizedself-moving

   反义词drawn

2. Moving by its own momentumB2formal

   Describes an object that moves forward using its own force or energy, not pushed or pulled by something else.

   自动推进的

   • The self-propelled torpedo glided silently through the water.
   • A self-propelled barge can navigate canals without a tugboat.
   • The toy car is self-propelled by a wind-up spring mechanism.

   同义词autonomousmotorizedself-actingself-moving

   反义词drivenguided