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Jyutping bou6 taam4 gei1
Pinyin bù tán jī

Definitions (Wiktionary)
  1. noun
    Synonym of 步話機/步话机 (bùhuàjī, “walkie-talkie”).
    (syn.) 步話機, 步话机
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)