outcrop

露头、露出的岩层地质

We climbed onto a granite outcrop to get a better view.

我们爬上一块露出地面的花岗岩，想看得更清楚。

露出地表、出露地质

Limestone outcrops along the whole eastern side of the valley.

石灰岩沿著整个山谷东侧露出地表。