precipice [ˈpresəpɪs]

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n.悬崖，危急的处境

a very steep side of a cliff or a mountain

The hut hung half over the edge of the precipice. 那间小屋有一半悬在峭壁边上。
A slight carelessness on this precipice could cost a man his life. 在这悬崖上稍一疏忽就会使人丧生。