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Jyutping bat1 paa3 jat1 maan6 , zau6 paa3 maan6 jat1
Pinyin bù pà yī wàn , jiù pà wàn yī

Definitions (Wiktionary)
  1. proverb
    one should be prepared for unexpected situations
    (syn.) 只怕萬一, 唔怕一万, 只怕万一, 唔怕一萬

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Jyutping bat1 paa3 jat1 maan6 , zau6 paa3 maan6 jat1
Pinyin bù pà yī wàn , jiù pà wàn yī

Definitions (CC-CEDICT)
  1. better to be safe than sorry (proverb)
  2. to be prepared just in case