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Jyutping ci5 dung2 fei1 dung2
Pinyin sì dǒng fēi dǒng

Definitions (CC-CEDICT)
  1. to not really understand
  2. to half-understand
Examples (Wiktionary)
  1. Mandarin
    似懂非懂
    似懂非懂
    sì dǒng fēi dǒng
    • not fully understand