Read Edit View history 前所未有 qiánsuǒwèiyǒu HSK7 unprecedented Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 前所未有 qiánsuǒwèiyǒu unprecedented idiom 这次疫情带来了前所未有的挑战。 Edit Delete References Add reference No references for this word.