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单词
permafrost
释义
permafrost
1 ENTRIES FOUND:
permafrost
(noun)
permafrost
/
ˈ
pɚməˌfrɑːst/
noun
permafrost
/
ˈ
pɚməˌfrɑːst/
noun
Learner's definition of PERMAFROST
[
noncount
]
technical
:
a layer of soil that is always frozen in very cold regions of the world
永冻土
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更新时间:2026/5/7 9:09:05