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词汇
permafrost
释义
permafrost
per·ma·frost
/
ˈpərməfrɔst
/
noun
[
uncountable
]
(
geography
地理
)
a
layer
of
soil
that
is
permanently
frozen
,
in
very
cold
regions
of
the
world
永久冻土;多年冻土
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更新时间:2024/10/23 0:29:21