permafrost

2 篇文章
If the permafrost melts, the methane released...
Walden 21
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17 0 2

If the permafrost melts, the methane released... 如果永冻土融化 释放出甲烷

methane permafrost released melts if the
It's known as permafrost.
Walden 21
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17 0 0

It's known as permafrost. 这些都是永久冻土层

permafrost known it's as
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