treacherous mountain passes
definitions
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dangerous and unpredictable routes through mountain ranges, often characterized by steep slopes, unstable terrain, or sudden weather changes that pose a risk to travelers.ru: опасные горные перевалы
examples
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The climbers struggled to navigate the treacherous mountain passes during the blizzard.
Альпинисты с трудом преодолевали опасные горные перевалы во время метели.