3.They were perilously close to the edge of the precipice.
们离悬崖边很近,十危险。
4.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。
5.The unloading cranny was distributed primarily in the east precipice and wide noumenon with large aperture and long extension as well as largest destructibility.