downslope

例句：

1. 1.The hikers were descending the steep downslope.
   徒步旅行者正在下山。
2. 2.The car was driving down the downslope at a steady pace.
   汽车在平稳地沿着下坡路行驶。
3. 3. The team was racing down the downslope to catch up with the other team.
   队伍正在下坡路上疾驰，试图赶上其他队伍。