周长400米的圆形跑道上,有相距100米的a,b两点,甲乙分别从点同时相背而跑,两人相遇后,乙 转身与甲同...周长400米的圆形跑道上,有相距100米的a,b两点,甲乙分别从点同时相背而跑,两人相遇后,乙
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![周长400米的圆形跑道上,有相距100米的a,b两点,甲乙分别从点同时相背而跑,两人相遇后,乙 转身与甲同...周长400米的圆形跑道上,有相距100米的a,b两点,甲乙分别从点同时相背而跑,两人相遇后,乙](/uploads/image/z/824121-9-1.jpg?t=%E5%91%A8%E9%95%BF400%E7%B1%B3%E7%9A%84%E5%9C%86%E5%BD%A2%E8%B7%91%E9%81%93%E4%B8%8A%2C%E6%9C%89%E7%9B%B8%E8%B7%9D100%E7%B1%B3%E7%9A%84a%2Cb%E4%B8%A4%E7%82%B9%2C%E7%94%B2%E4%B9%99%E5%88%86%E5%88%AB%E4%BB%8E%E7%82%B9%E5%90%8C%E6%97%B6%E7%9B%B8%E8%83%8C%E8%80%8C%E8%B7%91%2C%E4%B8%A4%E4%BA%BA%E7%9B%B8%E9%81%87%E5%90%8E%2C%E4%B9%99+%E8%BD%AC%E8%BA%AB%E4%B8%8E%E7%94%B2%E5%90%8C...%E5%91%A8%E9%95%BF400%E7%B1%B3%E7%9A%84%E5%9C%86%E5%BD%A2%E8%B7%91%E9%81%93%E4%B8%8A%2C%E6%9C%89%E7%9B%B8%E8%B7%9D100%E7%B1%B3%E7%9A%84a%2Cb%E4%B8%A4%E7%82%B9%2C%E7%94%B2%E4%B9%99%E5%88%86%E5%88%AB%E4%BB%8E%E7%82%B9%E5%90%8C%E6%97%B6%E7%9B%B8%E8%83%8C%E8%80%8C%E8%B7%91%2C%E4%B8%A4%E4%BA%BA%E7%9B%B8%E9%81%87%E5%90%8E%2C%E4%B9%99)
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