stone-age
adjective/ˈstəʊn eɪdʒ/
/ˈstəʊn eɪdʒ/
[only before noun]- belonging to the very early period of human history when tools and weapons were made of stone
石器时代：属于人类历史的早期，当时工具和武器是用石头制成的 - stone-age man/tools/culture
石器时代的人/工具/文化
- stone-age man/tools/culture
- (figurative) very out-of-date
石器时代：非常过时 - stone-age computers
原始计算机
- stone-age computers