第四性病 [－－－－]

Jyutping dai6 sei3 sing3 beng6
Pinyin dì sì xìng bìng

Definitions (Wiktionary)
  1. noun
    lymphogranuloma venereum (LGV)
    (syn.) 性病性淋巴肉芽肿, 性病性淋巴肉芽腫