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凹凸

āo tū
HSK 2.0 Level 6 Rare

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Definitions

  1. 1. concave or convex
  2. 2. bumps and holes
  3. 3. uneven (surface)
  4. 4. rugged

Usage notes

Collocations

“凹凸”常与“不平”搭配,如“凹凸不平”,表示表面不光滑、有起伏。

Formality

“凹凸”本身是中性词,但“凹凸不平”常用于书面语,口语中可能说“不平”或“坑坑洼洼”。