RE: RE: Stair climbing is a must for endurance,Take you to know different sports/爬楼梯会是增加耐力的必有运动,带你认识不一样的运动
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RE: Stair climbing is a must for endurance,Take you to know different sports/爬楼梯会是增加耐力的必有运动,带你认识不一样的运动

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对对对,你说的都对。