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Jyutping leoi5 sai3
Pinyin lěi shì

Definitions (CC-CANTO)
  1. few generations
Definitions (Wiktionary)
  1. adv, literary
    over the course of several generations; from generation to generation; down through the generations; through successive generations
    (syn.) 世代, 仍世, 累代, 世, 代代, 祖代