骨炭
定義
- boneblack
- Equivalent to 'bone black': A preparation containing carbonized bone, used as a pigment and a filtering medium.
CEFRレベル
C2
熟達
この単語はCEFR C2語彙に含まれます——熟達レベル。
この単語はCEFR C2語彙に含まれます——熟達レベル。
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