1.the downward slope of a hill
2.a ski race down a trail
3.sloping down rather steeply
4.toward a lower or inferior state;
your performance has been going downhill for a long time now
5.toward the bottom of a hill;
running downhill, he gained a lot of speed
高山速降車”,英文叫做DOWNHILL(簡稱DH)。DH是從山地車族里分離出來的車型,比所謂的山地自行車要高兩個檔次,作為一種以刺激、驚險著稱的終極運動,很早以前在一些歐美國家就相當盛行。這類車前叉很高,車體沉重,制動性能優越,擁有超強的抗震系統,對山路的崎嶇和陡峭有極強的適應能力,但比較笨重,對車手的體能要求較高。一般先用纜繩把車拉上山,然后從山上高速向下騎行,體驗極速帶來的刺激。這種玩法極具挑戰性——駕著速