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Sounds
Components
Characters
Words
Pinyin Chart
Docs
Community
HSK
7-9
+
凹凸
bumpy
Character Composition
Characters
凹
concave
凸
convex
Pinyin
ao1tu2
•
āotú
Meaning
Primary
bumpy
Mnemonic
A
凹凸 bumpy
road will have both
凸 convex
bumps and
凹 concave
holes.
Usage
凹凸不平 的 道路
bumpy road