turn something on its head
徹底顛覆或改變某事物的觀點、理論或情況
書面·學術或討論中強調(diào)顛覆性改變
英文釋義
to completely reverse or change something
例句
The new theory turns the old one on its head and changes everything we thought we knew.
典故來源
源于物理動作,將物體上下顛倒,比喻徹底推翻原有觀點或理論。