1、Leonardo da Vinci is often credited with designing an ornithopter, a machine that imitates the flapping wings of birds.
达·芬奇常被认为设计了一种模仿鸟类翅膀运动的飞行器，即飞舞机。
2、The ornithopter project aims to develop a new type of aircraft inspired by the flying mechanism of birds.
飞舞机项目旨在开发一种受鸟类飞行机制启发的新型飞行器。