元となった辞書の項目
地層
noun
stratum; geological formation; layer; bed (coal, gravel, etc.)
意味（1）
stratum; geological formation; layer; bed (coal, gravel, etc.)
stratum; geological formation; layer; bed (coal, gravel, etc.)
stratum; geological formation; layer; bed (coal, gravel, etc.)
DiQt（ディクト）
無料
★★★★★★★★★★
