N a layer between the inner and the outer sole of a shoe, contoured for absorbing shock 鞋底夹层
Focus on landing mid-sole, with your foot directly underneath your bodywith every step.
集中脚底中间着地，同时你的脚每步都直接在你身体下面。
University of Oregon track coach Bill Bowerman created the first cushioned mid-sole by heating polyure-thane on his wife's waffle iron in the early 70s, which later led to the creation of Nike Air.
20世纪70年代初期，俄勒冈大学的竞赛教练比尔鲍尔曼在他太太的比利时格子饼贴膜上加热聚氨酯，打造出第一个有软垫的鞋子中底，后来促成了Nike Air运动鞋的问世。
Mid sole made with high stretch EVA possess good tenacity.
高弹EVA制作的中底有很好的韧性。
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