Last Updated：2025/12/04
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Engineers drilled through the subterrain to assess the stability of the proposed foundation.
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Engineers drilled through the subterrain to assess the stability of the proposed foundation.
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Related words
subterrain
Noun
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uncountable
Japanese Meaning
地下の岩盤（地層の下にある基盤となる岩） / 地下洞窟または地下室 / 地下の区域 / 土台や基盤となるもの、あるいは裏に潜む勢力や流れ
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