牙垢
釋義
鈣化的牙菌斑
CEFR 等級
C2
精通
這個詞屬於 CEFR C2 詞彙——精通程度。
這個詞屬於 CEFR C2 詞彙——精通程度。
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鈣化的牙菌斑
Know this word better than we do? Language is a living thing — help us keep it growing. Collaborate with Babel Free