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春季解冻期的土壤水则来源于上一年的土壤封冻水。
During the period of thawing in spring, water in soil comes from freezing water in the previous year.
当春季解冻开始，运河会溢满水，这些溢出来的水会结成一层冰。
As the spring thaw sets in and the canals fill up, this over spill freezes into a layer of ice.
由于寒冷的气温，冻土带有两层：最上面的一层被称为活动层，在冬季和春季被冻结，但在夏季解冻。
Because of the cold temperatures, the tundra has two layers: top layer, which is called the active layer, is frozen in the winter and spring, but thaws in the summer.
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