这险峻陡峭的岩石山时。
由于火山地形险峻陡峭，他们的活干得很艰难，十字镐和重锤都要派上用场，而且汗流浃背。
The steep ruggedness of the volcanic terrain made this work very difficult; it required picks, sledgehammers, and a lot of sweat.
跑步翻越亚利桑那陡峭的山口，我四周的险峻山岩令人感到敬畏。
Running up through steep Arizona passes, the rock formations were awesome, as they say around here.
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