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Jyutping jat1 sing4 bat1 bin3
Pinyin yī chéng bù biàn

Definitions (CC-CEDICT)
  1. (idiom) immutable; impervious to change; set in stone
Definitions (粵典–words.hk)
  1. 語句
    形容​人好​固執​,​唔​識​變通​,​死守​自己​嘅​成​見
    bigoted
    • 做生意係唔可以一成不變嘅,一定要跟隨市場嘅需求而改變。
      做生意系唔可以一成不变嘅,一定要跟随市场嘅需求而改变。
      zou6 saang1 ji3 hai6 mm4 ho2 ji3 jat1 sing4 bat1 bin3 ge3, jat1 ding6 jiu3 gan1 ceoi4 si5 coeng4 ge3 seoi1 kau4 ji4 goi2 bin3
      One cannot run his business in a bigoted manner, and must change according to the market demands.
Definitions (Wiktionary)
  1. phrase, idiomatic
    immutable; unchangeable
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Definitions (HSK3.0)
  1. HSK3 七一九级词汇表 #4918
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    世事变幻无常,人不能因循守旧、一成不变。
    世事變幻無常,人不能因循守舊、一成不變。
    shì shì biàn huàn wú cháng , rén bù néng yīn xún shǒu jiù 、 yī chéng bù biàn 。
    • Things change from time to time, and one should change with them.
  2. Mandarin
    你是没创意到连每次道歉的说词都一成不变吗?
    你是沒創意到連每次道歉的說詞都一成不變嗎?
    nǐ shì méi chuàng yì dào lián měi cì dào qiàn de shuō cí dōu yī chéng bù biàn ma ?
    • Can it be that you don't have a bit of creativity, to the point of always inventing the same apology?
Examples (粵典–words.hk)
  1. Cantonese
    做生意系唔可以一成不变嘅,一定要跟随市场嘅需求而改变。
    做生意係唔可以一成不變嘅,一定要跟隨市場嘅需求而改變。
    zou6 saang1 ji3 hai6 mm4 ho2 ji3 jat1 sing4 bat1 bin3 ge3, jat1 ding6 jiu3 gan1 ceoi4 si5 coeng4 ge3 seoi1 kau4 ji4 goi2 bin3
    • One cannot run his business in a bigoted manner, and must change according to the market demands.
  2. Cantonese
    做嘢要识得变通,唔好一成不变。
    做嘢要識得變通,唔好一成不變。
    zou6 je5 jiu3 sik1 dak1 bin3 tung1, m4 hou2 jat1 sing4 bat1 bin3.
    • We have to be flexible when doing anything; we must not be rigid.