千慮一失 [－虑－－]

Jyutping cin1 leoi6 jat1 sat1
Pinyin qiān lǜ yī shī

Definitions (CC-CEDICT)
  1. reflect a thousand times and you can still make a mistake (idiom); to err is human
Definitions (Wiktionary)
  1. phrase, idiomatic
    even a wise person sometimes makes a mistake; no one is always free from errors
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）