[diān pū bù pò]
（無論怎樣摔打都不破， 比喻思想、理論正確， 無法駁倒） be able to withstand heavy battering; (The argument is) inconfutable.; (The truth is) incontestible.; (The point is) incontrovertible.; indisputable; (truth, theory) stand despite time and argument; irrefutable; (The argument is) irresistible.; (The challenge is) unanswerable.; (principles) which cannot be broken by criticism
irrefutable truth
顛撲不破的真理
This was really irrefutable evidence.
這真是一個顛撲不破的實例。