This permafrost was formed around the time of the Ice Age.

这片永久冻土层是在冰河时代前后形成的。

If this land is to be developed, we have to deal with the permafrost.

要想开发这片土地，我们就必须处理这片永久冻土。

My mentor has been studying the different permafrost of the earth for many years.

我的导师多年来一直在研究地球上各种不同的永冻土层。

It is practically all ice -permafrost - and it is thawing.

几乎到处是冰——永冻土层——现在都在融化。

On the beach there is a jagged layer of thawing permafrost.

海滩上，有一个不规则的正在融化的永久冻土层。

Permafrost Photo: Dentren at en.wikipedia / cc – by – sa 3.0

多年冻土图片：Dentren at en.wikipedia / cc – by – sa 3.0

Permafrost warms up, and infrastructure built on it founders.

永久冻土温度上升，在此基础上修建基础设施。

As the permafrost melts, the land loses its capacity to absorb water.

由于冻土融化，陆地会失去吸水性。