a gravity-powered sport where a person rides a specially designed board, lying on their back, feet-first, and races downhill on paved roads at high speeds
例子
He trained for months before attempting a downhill street luge competition.
在尝试下坡街头雪橇比赛之前,他训练了几个月。
In street luge, riders wear protective gear like helmets and leather suits for safety.