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Jyutping gung1 hoi1 seon3
Pinyin gōng kāi xìn

Definitions (CC-CEDICT)
  1. open letter
Definitions (粵典–words.hk)
  1. 名詞
    內容​公開​畀​公眾​睇​到​嘅​信​,​通常​用​嚟​宣示​一​啲​意見​、​立場​或者​訴求
    open letter
Definitions (Wiktionary)
  1. noun, countable
    open letter (Classifier: 封 m)
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Definitions (HSK3.0)
  1. HSK3 七一九级词汇表 #1351