zhè duàn / wén zì / yuán lái / xiě / de / hěn / jīng cǎi / bèi / tā / gǎi dòng / hòu / jiǎn zhí / shì / diǎn jīn chéng tiě

这段文字原来写得很精彩，被他改动后简直是点金成铁。

This passage was originally very well written, but it was ruined by his changes.