长期以来，萨米族人一直把这些帐篷用作便携式避难所——宽大的底部和叉状的支杆使它们能够承受住北极冻原上的大风。
The Sami has long used the tents as portable shelters—their wide bases and forked poles enable them to withstand the winds on the Arctic tundra.
北极冻原是指北极点周边的地区，是世界最高的地方。
The arctic tundra is at the top of the world around the North Pole.
长白山高山冻原苔藓植物区系及其与北极冻原苔藓植物区系的关系。
Bryoflora of the alpine tundra of Changbai Mountain and its floristic relationship to the...
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