Unless, that is, you start to think about how a frisbee flies. At Arizona State University there is even a course on the frisbee, which introduces students to principles of aerodynamics, Newtonian gravity, momentum, velocity, and so on.
美國亞利桑那州立大學講師威廉斯，甚至為飛盤開了一門課﹘﹘「圓盤技巧一○五」。授課大綱令人看了不免肅然起敬﹘﹘空氣動力學、牛頓定律、動量矩、速率、天氣… … 等都名列榜上。