Definition
轮子 (lún zi) is the everyday, standalone noun for a wheel — like on a bicycle, car, or suitcase. 轮 (lún) also means 'wheel' but is more formal/technical and usually appears in compound words (e.g., 车轮 'car wheel', 齿轮 'gear wheel') or as a classifier; for a single, concrete wheel, use 轮子.
noun
wheel
Measure word · 个
Examples
- 轮子，。Zìxíngchē de lún zi huài le, xūyào xiūlǐ.The bicycle wheel is broken and needs repair.
- 轮子，。Zhège xiāngzi de lún zi hěn línghuó, tuī qǐlai hěn fāngbiàn.The wheels on this suitcase are very smooth and easy to push.
- 轮子。Qìchē yǒu sì gè lún zi.A car has four wheels.
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