a high area of rock with a very steep side, often at the edge of the sea or ocean （常指海洋边的）悬崖，峭壁 
the cliff edge/top 悬崖边缘／顶端 the chalk cliffs of southern England 英格兰南部的白垩质峭壁 a castle perched high on the cliffs above the river 高高耸立在临河峭壁上的城堡 We set off along the cliff path. 我们沿着悬崖小路出发了。
Extra ExamplesTopics Geographyb2Steep cliffs towered above the river. 陡峭的悬崖俯瞰着那条河。 The cliffs fall away to the north. 峭壁向北倾斜。 The hotel was perched high on a cliff overlooking the ocean. 旅馆高高地建在山崖上，俯瞰大海。 a long line of cliffs surrounding the bay 环绕海湾的一长溜绝壁 crumbling cliffs 坍塌的悬崖
Oxford Collocations Dictionaryadjective- high
- towering
- low
- …
- line
- climb
- scale
- descend
- …
- fall
- fall away
- rise
- …
- edge
- face
- ledge
- …
- be perched on a cliff
- the base of the cliff
- the bottom of the cliff
- …
Word OriginOld English clif, of Germanic origin; related to Dutch klif.
Idioms
fall off a cliff
- (informal)
to decrease quickly and suddenly in quantity or quality 悬崖：数量或质量迅速下降 Sales fell off a cliff in the first quarter of the year. 今年第一季度销售额急剧下降。