这些冒险竞赛是仅仅难以相信的。
那是有形收益的一部分，是冒险竞赛的实质内容：脸上的泥巴与痛苦的狂欢。
That's the hard part of the adventure race, the mud in your face and the suffer-fest.
冒险竞赛是综合了传统的三项全能运动和美国人颇为喜欢的多项室外娱乐活动的比赛。
Adventure racing is a cross between a traditional triathlon and several of America's favorite outdoor recreational activities.
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