凹凸 的释义 | Babel Free
ˀɑʊ̯⁵⁵ tʰu⁵⁵释义
凹陷和凸起；高低不平。
CEFR 等级
C2
精通
该词属于CEFR C2词汇——精通水平。
该词属于CEFR C2词汇——精通水平。
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