“火箭人”空中翻筋斗

Swiss (瑞士人) Yves Rossy is 51 years old. He invents4 a wing suit (飞行衣). He wears his wing suit and jumps out of a hot-air balloon. He makes two loops (翻筋斗) in the sky. Rossy used to be (曾经是) a pilot (飞行员).