ChineseDict
Random
About
凹
ao1
凹
凸
tu1
凸
concave or convex
bumps and holes
uneven (surface)
rugged
Info
Wiktionary: 凹凸
MDBG: 凹凸
Examples with 凹凸 on
Tatoeba
Percentile: 78
(higher is more common)
Tags:
HSK6