[diān pū bù pò]
（无论怎样摔打都不破， 比喻思想、理论正确， 无法驳倒） 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
颠扑不破的真理
This was really irrefutable evidence.
这真是一个颠扑不破的实例。