他沿着山脊的小路走。

He walks along the path on the ___ridge.

山脊看起来很狭窄。

The mountain ___ridge looks narrow.

沙滩上的波浪留下了一道道细小的隆起痕迹。

The waves left small ___ridges on the sandy beach.

我们沿着山脊徒步，欣赏两边的风景。

We hiked along the ___ridge and enjoyed the views on both sides.