千載一時 [－载－时]

Jyutping cin1 zoi2 jat1 si4
Pinyin qiān zǎi yī shí

Definitions (CC-CANTO)
  1. once in a thousand years, which means a rare opportunity
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）