活动永冻土

active permafrost的用法和样例：

例句

The northerly site was chosen for its lack of tectonic activity and its permafrost.挪威之所以会选择在这里建设种子库，是因为这一地区地质活动较少，而且处于永冻土地带。
The Himalayan cryosphere such as glaciers and permafrost is very important in water circulation in the area.喜玛拉雅的冰冻圈，如冰川和永冻土在该区域的水循环中非常重要。

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发表于:2019-01-02 / 阅读(63) / 评论(0)

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发表于:2019-01-16 / 阅读(60) / 评论(0)

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