steep dropping voltampere characteristic

例句：

1. 1. The mountain was so steep that it was difficult to climb.
   这座山太陡了，难以攀登。
2. 2. The steep drop in the road made me nervous.
   道路的急剧下降让我感到紧张。
3. 3. The steep slope of the mountain is a challenge for hikers.
   山脉陡峭的坡度是徒步旅行者的挑战。