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Jyutping dat6 faat3 kei4 soeng2
Pinyin tú fā qí xiǎng

Definitions (Wiktionary)
  1. phrase, idiomatic
    to suddenly come up with an ingenious idea; to suddenly be inspired to do something

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Jyutping dat6 faat3 kei4 soeng2
Pinyin tū fā qí xiǎng

Definitions (CC-CEDICT)
  1. suddenly have a thought (idiom)
  2. suddenly be inspired to do something
Definitions (Wiktionary)
  1. phrase, idiomatic
    to suddenly come up with an ingenious idea; to suddenly be inspired to do something
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    这只是突发奇想。
    這只是突發奇想。
    zhè zhǐ shì tū fā qí xiǎng 。
    • It was just a passing infatuation.
    • It was only a passing fad.