a machine that makes solid objects from a digital file by adding more and more layers of a material until the object is complete The car's entire body, seats and windshield are printed by a 3D printer and are made out of carbon fibre and plastic. 汽车的整个车身，座椅和挡风玻璃均由3D打印机打印，并由碳纤维和塑料制成。