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Jyutping seon3 leoi4 bat1 kap6 jim2 ji5
Pinyin xùn léi bù jí yǎn ěr

Definitions (CC-CANTO)
  1. (a swift clap of thunder leaves no time for one to cover the ears); to be extremely sudden and swift
Definitions (粵典–words.hk)
  1. 語句
    發生​得​好​快​,​防備​唔​切
    too fast to avoid it; something happened as sudden as lightning
Definitions (Wiktionary)
  1. phrase, idiomatic
    as sudden as lightning
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    迅雷不及掩耳
    迅雷不及掩耳
    seon3 leoi4 bat1 kap6 jim2 ji5
    • too fast to avoid