eternal and un changeable; immutable; never-changing; un changeable; unchanging ? 事實勝于雄辯，這是一條～的真理。Facts speak louder than words.This is an eternal truth.
萬古不變wàn ɡǔ bù biàn
萬古：形容經(jīng)歷的時間很長。形容永遠(yuǎn)不改變。no change forever, immutable, unchangeable, eternal and immutable