短語詞組短語go downhill 衰退；變壞；走下坡路DownHill bike 速降自行車;速降腳踏車;速降山地車;速降Downhill Derby 怪車下坡賽;湯姆的改裝賽車Extreme Downhill 極限滑降Downhill Delivery 購物車沖下坡downhill casting 上鑄法;上鑄;頂澆downhill grade 下坡道;下坡Downhill Bowling2 坡地保齡球;坡地保齡DownHill Racing 速降滑雪;速降比賽;速降競賽 返回 downhill