Word · 単語
地層
Reading ちそう
stratum
stratum · geological formation · layer · bed (coal, gravel, etc.)
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JLPT
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strokes
#9502
frequency
Not started
Mastered counts as known everywhere (frontier, map, extension) but never appears in the quiz again. New wipes the review history for this item.
例文 · examples
これは永久に凍っている地層であり、それが何フィートの深さの所もある。
This is a layer of soil that is permanently frozen, and in some places it's many feet deep.