If you kick the ball hard enough for the airflow over the surface to become turbulent, then the drag force remains small and the ball will really fly.
如果你踢球的力量足够大,使得球表面的气流形成湍流,则阻力会很小,你很可能踢成高射炮。
把烦恼踢开,然后看它飞走!
The only place the fly kick is not a plus for most swimmers is in the 50-yard freestyle.
对于大多数游泳者来说,海豚腿唯一没什么用的地方就是50码自由泳比赛。
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