| 摘要 |
When sliding down on the slope at the tall building or high cliff, with the big wing made of the ligt material, like cloth or vinyl, not metal, and the profella worked by the pedal or the battery, or being towed quickly by the other vehicles or running past on the road like plane's take-off, the bicycle/ motorcycle will start flying in the air because of the head of height, the sliding down power of the law of inertia, or the buoyancy of the air arising by the wing, after that by the spining profella you can fly in the sky continually. |
