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Jyutping zi1 cyu5 caan2 jip6
Pinyin zhī zhù chǎn yè

Definitions (CC-CEDICT)
  1. mainstay industry
Definitions (Wiktionary)
  1. noun
    pillar industry
Examples (粵典–words.hk)
  1. Cantonese
    四大支柱产业
    四大支柱產業
    sei3 daai6 zi1 cyu5 caan2 jip6
    • the four pillar industries (of Hong Kong)