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Jyutping jam6 zung6 dou6 jyun5
Pinyin rèn zhòng dào yuǎn

Definitions (CC-CEDICT)
  1. a heavy load and a long road
  2. fig. to bear heavy responsibilities through a long struggle (cf Confucian Analects, 8.7)
Definitions (粵典–words.hk)
  1. 形容詞
    責任​重大​,​歷程​漫長
    to bear a great responsibility and have a long way to go
    • 做老師真係任重道遠、責任重大,唔係淨係為咗份糧㗎!
      做老师真系任重道远、责任重大,唔系净系为咗份粮㗎!
      Being a teacher is heavily burdensome, it is not only for the purpose of earning a living.
Definitions (Wiktionary)
  1. phrase, idiomatic
    to shoulder a heavy responsibility for a long time
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    做老师真系任重道远、责任重大,唔系净系为咗份粮㗎!
    做老師真係任重道遠、責任重大,唔係淨係為咗份糧㗎!
    • Being a teacher is heavily burdensome, it is not only for the purpose of earning a living.