It does it, it turns out, with the same denticles that you had on Speedo bathing suits, that broke all those records in the Olympics, but it's a particular kind of pattern.
原来是他身上的锯齿状物 就是和Speedo泳衣材质一样的锯齿状物 有了它运动员在奥运会上所向披靡 但这齿状物有一种独特的图案