这次徒步旅行经过了一段非常险峻的山路。

The hiking trail included a ___gnarly section through steep mountains.

你那辆改装后的摩托看起来太酷了！

Your customized motorcycle looks totally ___gnarly!

这位老渔民的双手布满了粗糙的皱纹。

The old fisherman's hands were covered with ___gnarly wrinkles.