translation.en: And it turns out that the insects flap their wings in a very clever way, at a very high angle of attack that creates a structure at the leading edge of the wing, a little tornado-like structure called a leading edge vortex, and it's that vortex that actually enables the wings to make enough force for the animal to stay in the air.
translation.zh: 结果是，我们发现昆虫拍打翅膀的方式 很巧妙。 创建一个结构的机翼前沿 称为前缘涡，有点类似龙卷风的结构 这个漩涡实际上让翅膀 可以产生足够的力量让它们悬浮在空中