词汇	permafrozen ground
释义	permafrozen ground 永冻土
随便看	human life being human life ideas human life information human life is evanescent Human life is full of ups and downs human life meaning Human life must always be sacred Human Life Salvage human life science human life-science human life span Human Life Statute human LIF Eukaryotic human life value Human LIGHT gene human-like intelligent control human-like machine translation human-like machine translation system human limbal stem cells human linguistics human lipopolysaccharide re-sponsive gene human lipopolysaccharide respon-sive proein human lipoprotein-deficient serum human lipotropin human literature