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Over centuries, a thick mineral crust formed on the cave walls, sealing in ancient air pockets.
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Over centuries, a thick mineral crust formed on the cave walls, sealing in ancient air pockets.
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Related words
crust
IPA(Pronunciation)
Noun
countable
uncountable
Australia
Britain
Canada
Ireland
New-Zealand
broadly
informal
abbreviation
alt-of
ellipsis
Japanese Meaning
表面または境界にある、より固く密な、または硬い層 / 食品（パン、フライドミートなど）の外側の、固くなった部分（皮） / パイなどの生地の外側の層
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