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Jyutping loeng5 sing3 gwaan1 hai6
Pinyin liǎng xìng guān xì

Definitions (Wiktionary)
  1. noun
    sexual relations between men and women
    (syn.) 性愛, 关系, 性爱, 性关系, 性關係, 關係
Examples (粵典–words.hk)
  1. Cantonese
    两性关系
    兩性關係
    loeng5 sing3 gwaan1 hai6
    • relationship between two sexes
  2. Cantonese
    两性关系混乱
    兩性關係混亂
    loeng5 sing3 gwaan1 hai6 wan6 lyun6
    • messy relationship between sexes