# 一成不变

- **Language:** Chinese
- **Level:** HSK 7-9 (Proficient)
- **Part of speech:** adjective
- **Pronunciation:** yìchéng bùbiàn
- **English:** immutable
- **Persian:** تغییرناپذیر
- **Definition:** Never changing or impossible to change.

## Example

> 他们相信自然法则是一成不变的。
> They believed the laws of nature were immutable.
> آن‌ها باور داشتند قوانین طبیعت تغییرناپذیرند.

## Common phrases

- 一成不变的法则
- 不变的真理
- 既定事实

## Related words

- [平息](https://langai.darkube.ir/vocabulary/chinese/pingxi): abate (HSK 7-9)
- [改良](https://langai.darkube.ir/vocabulary/chinese/gailiang): ameliorate (HSK 7-9)
- [恶化](https://langai.darkube.ir/vocabulary/chinese/ehua): deteriorate (HSK 6)
- [减弱](https://langai.darkube.ir/vocabulary/chinese/jianruo): diminish (HSK 6)
- [加剧](https://langai.darkube.ir/vocabulary/chinese/jiaju): exacerbate (HSK 6)
- [波动](https://langai.darkube.ir/vocabulary/chinese/bodong): fluctuate (HSK 6)
- [缓解](https://langai.darkube.ir/vocabulary/chinese/huanjie): mitigate (HSK 6)
- [过时](https://langai.darkube.ir/vocabulary/chinese/guoshi): obsolete (HSK 6)

Source: https://langai.darkube.ir/vocabulary/chinese/yicheng-bubian