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Jyutping gau2 beng6 sing4 ji1
Pinyin jiǔ bìng chéng yī

Definitions (CC-CEDICT)
  1. (proverb) a long illness makes the patient into a doctor
Definitions (粵典–words.hk)
  1. 語句
    病耐​咗​,​對​醫理​都​熟​咗
    to become familiar with medicine due to one's prolonged illness
    • 佢做藥煲做咗十年有多,藥性、副作用知得一清二楚,已經久病成醫。
      佢做药煲做咗十年有多,药性、副作用知得一清二楚,已经久病成医。
      keoi5 zou6 joek6 bou1 zou6 zo2 sap6 nin4 jau5 do1, joek6 sing3, fu3 zok3 jung6 zi1 dak1 jat1 cing1 ji6 co2, ji5 ging1 gau2 beng6 sing4 ji1.
      Relying on medicine for his illness for more than ten years, he has become familiar with the nature and side effects of the medicine.
Definitions (Wiktionary)
  1. phrase, idiomatic
    experience is the best teacher
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    佢做药煲做咗十年有多,药性、副作用知得一清二楚,已经久病成医。
    佢做藥煲做咗十年有多,藥性、副作用知得一清二楚,已經久病成醫。
    keoi5 zou6 joek6 bou1 zou6 zo2 sap6 nin4 jau5 do1, joek6 sing3, fu3 zok3 jung6 zi1 dak1 jat1 cing1 ji6 co2, ji5 ging1 gau2 beng6 sing4 ji1.
    • Relying on medicine for his illness for more than ten years, he has become familiar with the nature and side effects of the medicine.