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Jyutping tung1 jau4
Pinyin tōng yóu

Definitions (CC-CEDICT)
  1. to have postal communications
Definitions (粵典–words.hk)
  1. 動詞
    國家​或​地區​之間​有​郵件​相互​往來
    accessible in postal communication
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)