having caterpillar treads on the rear and wheels in front; "half-track armored vehicles" 同义词：half-tracked,
A half-track is a civilian or military vehicle with regular wheels at the front for steering and caterpillar tracks at the back to propel the vehicle and carry most of the load. The purpose of this combination is to produce a vehicle with the cross-country capabilities of a tank and the handling of a wheeled vehicle.
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