permanently frozen ground

基本解釋

Slowly the carcass, more than four times the weight of a bull elephant, appears onto the ice to be cut up, dragged to the village and stored in pits in the permanently frozen ground.
慢慢地，這頭比四頭公象還要重的鯨魚一點(diǎn)點(diǎn)被拉到了冰麪上，然後，被分割成小塊，運(yùn)到村裡，儲(chǔ)藏在永久凍土下的洞裡。
When this normally permanently frozen ground thaws, the water in the lakes can seep through the soil, draining the lake.
儅這種正常的永久凍土層融化後，湖水可以滲進(jìn)土壤，排空湖泊。
hbslfb.blog.163.com
They looked in particular at the creation of "taliks", which are patches of unfrozen ground sandwiched between layers of permanently frozen soil lower down and a seasonally frozen patch of soil above.
他們尤其考量了位於底層永久凍結(jié)土壤和上層季節(jié)性凍結(jié)土壤之間的居間不凍層的形成。
env.people.com.cn