# permafrost ##### 词义 - 英:/ˈpɜːməfrɒst/; 美:/ˈpɜːrməfrɔːst/ - #词性/n 永冻层;(寒带)永冻土层 ##### 例句 - She urged anyone with doubts to go to Alaska , where the permafrost is dying , or to California 's Sierra Mountains , where snow is melting earlier in the spring , creating havoc for water supplies . - 她敦促持怀疑态度的人前往阿拉斯加,那里的永冻土层将要消失,或者前往加利福尼亚州的塞拉山脉,那里的冰雪在早春时节便已融化,严重破坏了水供给。 - It might be possible for similar organisms to survive for billions of years below the permafrost layer on Mars , where water is liquid , radiation supplies energy , and carbon dioxide provides carbon . - 类似的生物体有可能在火星的永冻土层下面生活了上亿年,那里的水是液态的,放射提供能量,二氧化物提供碳的来源。 - Design of Automatic Detecting System of Permafrost Temperature based on GPRS - 基于GPRS的冻土地温远程自动监测系统设计