But, in snow mountain, desert, gorge fascicular, laky, fenny, river is spread all over and Gao Han is anoxic in harsh environment, human activity is very limited still have the risk that comparative.

• 但是,在雪山、戈壁、峡谷丛生,湖泊、沼泽、河流遍布以及高寒缺氧的严酷自然环境中,人类的活动还是十分有限并具有相当的危险。