v.(使)变得陡峭( steepen的过去式和过去分词 );
例句:
After a mile, the slope steepened.
过了一英里后,山坡变陡了。
The mountain side has steepened.
山坡很陡峭.
The landslides have steepened the mountain sides.
山崩使山泳的一侧变得陡峭了.