permafrost的意思|示意
n. 多年冻土；永久冻结带；永久冰冻
IELTS
permafrost的用法详解
英语单词Permafrost的用法讲解
Permafrost是一个由两个单词Permanent和Frost组成的合成词。它是指一种结冰土壤，这种土壤在深度超过0℃的夏季也不会融化，因为它处于极地气候区域中永久性的冰冷环境中。
Permafrost主要分布在北极地区和高山冰川区域，其中阿拉斯加和西伯利亚拥有最广泛的Permafrost。它们是气候变化的指示器，因为它们的变化可以反映出整个地球的温度变化趋势。此外，Permafrost也影响了人类在极地地区的生活、工作和建筑活动。
下面是一些使用Permafrost时的例句：
1. The permafrost in the Arctic region is melting at an alarming rate due to climate change.
2. The construction of buildings and infrastructure in permafrost areas requires specialized engineering techniques.
3. Permafrost degradation can lead to landslides and erosion, posing threats to communities and ecosystems in the area.
4. Permafrost contains important environmental data that scientists can use to better understand the history of the Earth's climate.
permafrost相关短语
1、 permafrost table [地质]永冻土面
permafrost相关例句
Vladimir Romanovsky permafrost expert also at the University of Alaska, Fairbanks, says the study is worrying.
一名用冻土层专家,同样来自位于费尔班克斯的阿拉斯加大学, 称研究令人担忧.
期刊摘选
An example of a tipping point is the thawing of the permafrost.
“气候引爆点”的一个例子就是永久冻土层的融化.
期刊摘选
It became entombed in the permafrost, where it remained until recently freed.
它被掩埋在永久冻土层里, 直到最近才被挖掘出来.
期刊摘选
Perhaps this is caused by the sudden melting of subsurface permafrost.
可能是地下永久冻土突然融化所造成.
辞典例句
Thawing and refreezing each year, an active layer of soil lies over permafrost.
覆盖在永冻层上方的一层活冻层土壤,每年都会融化和重新冻结.
期刊摘选
The harder the material under the permafrost is, the larger the chamber charge required.
永冻层之下的土壤越硬, 所需要的药室装药量也越大.
辞典例句