subsurface
Not having been deveined.
Something that is below the layer that is on the surface. / (countable, mathematics) A surface which is a submanifold of another surface.
The state or condition of being corny
(mathematics, logic) An extension of a logical theory such that every theorem expressible in the original theory is also derivable within the original theory.
地質学者たちは地下層を調べて地下水の流れを理解しようとしました。
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DiQt
Free
★★★★★★★★★★
