Meaning and Usage
The term 凹凸 (āo tū) describes surfaces or shapes that are uneven, specifically having concave (凹) and convex (凸) parts. It is often used to describe physical textures like roads, objects, or skin.
Common Contexts
凹凸 is frequently used in everyday conversation to talk about uneven surfaces that affect comfort or function, such as bumpy roads or textured materials. It can also describe irregularities on skin or other surfaces.
Collocations and Patterns
- 凹凸不平: uneven, bumpy; commonly used for roads, ground, or surfaces.
- 凹凸设计: design featuring concave and convex elements, often for grip or aesthetics.
Usage Notes
凹凸 is a descriptive term and usually appears as a compound. It is neutral in tone and suitable for both spoken and written language. Avoid confusing it with similar words that only mean 'bumpy' without specifying concave or convex shapes.
Summary
Use 凹凸 when you want to emphasize the presence of both dips and protrusions on a surface, highlighting its unevenness in a precise way.