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stone-age

adjective
🔊/ˈstəʊn eɪdʒ/
🔊/ˈstəʊn eɪdʒ/
 [only before noun]
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  1. belonging to the very early period of human history when tools and weapons were made of stone
    • stone-age man/tools/culture石器时代的人/工具/文化
    Topics Historyc1
  2. (figurative) very out-of-date
    • stone-age computers原始计算机