permafrost的意思

permafrost

英式音标['pɝməfrɔst]
美式英标['pɜːməfrɒst]

基本解释

n. 永久冻土，永久冻地；永久冻结带；永久冰冻

中文词源

permafrost 永冻土

缩写自permanent frost.

英文词源

permafrost (n.): 1943, coined in English by Russian-born U.S. geologist Siemon W. Muller (1900-1970) from perm(anent) frost.

实用例句

1. 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.

2. This is the vegetational climate of arctic permafrost regions.: 这是北极永冻地区的植物气候.

3. 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.

4. 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.

5. 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.

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