Something that has never happened before in history; unprecedented.
历史上从来没有过的事。指前所未有。
清·丘逢甲《岭云海日楼诗钞》卷十二牢落文章第一人，天门垂翅竟何因？百年记注无前例，万事枢机有要津。”
The invention of the Internet was a shǐ wú qián lì event that changed the world.
Learn the next connected idiom: 史无前例 (shǐ wú qián lì) → 例行公事 (lì xíng gōng shì)
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