1. 陡的;陡峭的;陡直的
A steep slope rises at a very sharp angle and is difficult to go up.
e.g. San Francisco is built on 40 hills and some are very steep.
旧金山建在 40 座小山丘上，其中一些非常陡峭。
e.g. ...a narrow, steep-sided valley.
两旁山坡陡峭的狭窄山谷