steep seam

例句：

1. 1. The mountain was so steep that it was hard to climb.
   那座山太陡了，很难攀登。
2. 2.The river is very steep and requires a strong swimmer to cross.
   这条河非常陡峭，需要游泳技巧高强的人才能过河。
3. 3.The slope of the hill is steep, making it difficult for people to walk up.
   这座山的坡度很陡，使得人们难以上山行走。