Plus, it was one of those solid iron affairs that never gets damaged - the kind you see at the scene of an accident, paint unscratched, surrounded by the pieces of the foreign car it had destroyed.
问大神，要如何理解paint unscratched，过去分词短语不是应该unscratched开头？
paint unscratched为独立主格结构，由名词+形容词构成。unsctatched并非过去分词，由于没unscratch如此的动词。这是过去分词scratched形容词化后，在形容词基础上加否定前缀构成的形容词。