陡壁的英文：
steep wall
cliff
precipice

参考例句：

By coincidence or other wise, the largest channel is exposed in the Beaver Divide escarpment.
由于巧合或其他原因，最大通道在比佛迪维特陡壁区出露的位置。

steep是什么意思：
adj. 陡的，急剧升降的；过分；过高
v. 浸，泡

The roof has a steep pitch.
屋顶很陡。

The lake was shadowed by the steep cliffs.
陡峭的悬崖把湖笼罩在阴影里。

You have to steep this tea in hot water.
你必须把这包茶叶泡在热水中。

wall是什么意思：
n. 墙，壁；人墙；围墙；屏障；障碍
v. 用墙围住；用墙隔开；禁闭

There is a blank wall.
有面无窗的墙。

The walls are beige.
墙壁都是米色的。

This is a plumb wall.
这是一面垂直的墙。

cliff是什么意思：
n. 悬崖，绝壁

The waves wash the foot of the cliffs.
波浪拍打断崖底部。

The sea washes the base of the cliffs.
海水冲击悬崖的底部。

The lake was shadowed by the steep cliffs.
陡峭的悬崖把湖笼罩在阴影里。