“下坡道”用英语怎么说？

越野 滑雪赛道由平道 、 上坡道和下坡道组成.The cross - country course consists 0 f flat, uphill and downhill sections.要宠潮湿恶棍流浪汉营地下坡道灯.Don't pamperdamp scamp tramps that camp under ramp lamps.曲线及上坡道阻力大, 直线阻力小, 下坡道还有加速力.Curve and path re...