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Jyutping si2 cin4 si4 doi6
Pinyin shǐ qián shí dài

Definitions (CC-CANTO)
  1. Prehistoric era
Definitions (Wiktionary)
  1. noun
    prehistoric age; prehistory
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (Wiktionary)
  1. Mandarin
    史前时代
    史前時代
    shǐ qián shí dài
    • prehistoric times