点燃激情的“飞火流星”“彩球当空舞”是今年世界杯足球赛的一大景观。足球一直是用动物皮革作为制造材料,其缺点明显,如受力不均匀,不够轻,弹性差,在空中运行轨迹不精确,尤其是因为吸水会变得越来越重,球员踢球后会受到足球很大的冲击力,有时甚至会因此对球员的脚造成损伤。 Ignite the passion of the “Flying Fire Meteor” “Ball Sky Dance” is this year’s World Cup a major landscape. Football has always been the use of animal leather as a manufacturing material, its obvious shortcomings, such as uneven force, light enough, poor flexibility, inaccurate trajectory in the air, especially because the water will get heavier and heavier after the players play By the great impact of football, and sometimes even to the player’s foot injury.