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Jyutping faat3 cing4 kei4
Pinyin fā qíng qí

Definitions (Wiktionary)
  1. noun
    mating season; sexually active period

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Jyutping faat3 cing4 kei4
Pinyin fā qíng qī

Definitions (CC-CEDICT)
  1. the breeding season (zool.)
  2. oestrus (period of sexual receptivity of female mammals)
Definitions (Wiktionary)
  1. noun
    mating season; sexually active period
Examples (Wiktionary)
  1. Mandarin
    发情期
    發情期
    fā qíng qī
    • mating season