ravine|ravines

我们小心翼翼地穿过狭窄的峡谷。

We carefully crossed the narrow ___ravine.

我们沿着小路走，要小心避开那些陡峭的峡谷。

We walked along the trail, carefully avoiding the steep ___ravines.

我们在干旱的峡谷中发现了一条干涸的河床。

We found a dry ___ravine in the arid canyon.