bare rock

基本解释

Lower slopes of mountains are blanketed in forest, while above treeline, the ground appears to be bare rock.
山岭低缓的斜坡上覆满森林，在林线之上地表显露出裸岩。
The theory of "second round of oil and gas exploration of China" and the course of the seismic exploration in the bare carbonate rock area of south China;
在刘光鼎院士提出的“油气资源二次创业”理论方法指导下，我国在海相碳酸盐岩地区开展的地球物理勘探工作取得了重要成果。
Bare spherical weathered rock can threaten the bridge pile and abutment on the steep slope.
而裸露的孤石对斜坡地段桩基及墩台构成威胁。

In sun, rain or snow she was up there, digging down through the turf and the fibrous black peat until she hit bare rock.
ECONOMIST: Winnie Johnson
The helicopters were going back and forth, ferrying snow from the high peaks in the Alps down to naked ski slopes so that the World Cup ski racers would have something to shush on besides bare rock.
NPR: Can Climate Change Explain Odd Weather?
Proud and free, Okello ended up on hard rock in the bare and barren Ngong Hills.
FORBES: Rules of Order in the Jungle