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夏秋之交,日渐凉爽的天气让人们走出了家门,加入到户外运动的队伍当中来。在参加户外运动的人群中有着这样一部分特殊的群体。
At the turn of summer and autumn, the increasingly cool weather has allowed people to step out of their homes and join the ranks of outdoor sports. There are some special groups in the crowd who participate in outdoor sports.