The principal swimming strokes are the crawl, backstroke, breaststroke and butterfly.
主要游泳姿式有爬泳、仰泳、蛙泳和蝶泳。
Swimming is both as a competitive sport and recreation. The principal swimming strokes are the crawl, backstroke, breaststroke and butterfly.
游泳既是竞赛运动又是娱乐。主要游泳姿式有爬泳、仰泳、蛙泳和蝶泳。
Swimming is both as a competitive sport and recreation. The principal swimming strokes are the crawl, backstroke, breaststroke and butterfly.
游泳既是竞赛运动又是娱乐。主要游泳姿式有爬泳、仰泳、蛙泳和蝶泳。
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