Several companies around the world have produced prototypes that can drive on roads and fly, airbus has a futuristic modular concept involving a passenger capsule that can be detached from the road- going chassis and picked up by a helicopter-type machine
2019年6月六级真题（第二套）阅读 Section A
Several companies around the world have produced prototypes that can drive on roads and fly.
2019年6月六级真题（第二套）阅读 Section A
柯林斯高阶英汉双解学习词典释义
N-COUNT
原型；样品；样本
A prototype is a new type of machine or device which is not yet ready to be made in large numbers and sold.