frost mound ; frost hillock ; soffisian knob
... mound drain 堆石排水沟 frost mound 冻丘 Mound Builder 筑墩者 ...
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大冻丘 pingo
小冻丘 frost blister
丘状冻原 hilly tundra ; hill tundra
冻胀丘 frost mound
泥炭冻胀丘 palsen
冻胀穹丘 pingo
冻原穹丘口 tundra crater
固体丘冻原 bult tundra
·2,447,543篇论文数据，部分数据来源于NoteExpress
研究人员通过观测被称为泥炭丘的小丘来测量永冻带边界北退的程度，泥炭丘是在北部泥炭沼泽含冰的土壤上自然形成的。
The researchers measured the retreat of the permafrost border byobserving hummocks known as "palsas, " which form naturally over icecontained in the soil of northern peat bogs.
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