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Jyutping zyun1 gaa1 zing3 jan4
Pinyin zhuān jiā zhèng rén

Definitions (Wiktionary)
  1. noun
    expert witness
Examples (粵典–words.hk)
  1. Cantonese
    专家证人
    專家證人
    zyun1 gaa1 zing3 jan4
    • expert witness