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凹凸形
āotūxíng
1. in and out shape
2. crenelated

Character Breakdown

凹
āo
concave, hollow; depressed; pass, valley
HSK 6 5 丶
凸
tū
to protrude, to bulge out; convex
HSK 6 5 丶
形
xíng
form, shape; to appear; to describe; to look
HSK 5 7 丶

Metadata

Category
Chinese