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Jyutping tung1 seon3 bing1
Pinyin tōng xìn bīng

Definitions (CC-CANTO)
  1. a signal corps
Definitions (Wiktionary)
  1. noun
    signal corps; signalman
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)