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Gymnastics or sports mat has two outer layers with two inner layers between them and support layers between each outer layer and its neighboring inner layer
Gymnastics or sports mat has two outer layers with two inner layers between them and support layers between each outer layer and its neighboring inner layer
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机译:体操垫或运动垫有两个外层,它们之间有两个内层,在每个外层与其相邻的内层之间有支撑层
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摘要
Gymnastics or sports mat has two outer layers (4, 5) with two inner layers (6, 7) between them. There are support layers (8, 9) between each outer layer and its neighboring inner layer.
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