一个句子的解释···求大神

zhoujun0920UID??2846855

The tradition of religious sculpture(which) extends over most historical periods(/) but is less clearly delineated than that of stonewares or porcelains, for(/) it embraces the old custom of earthenware burial ceramics with later religious images and architectural ornament.

括号自己断句加的
这句话到底是什么意思？？

846136085UID??2987171

那个which没有必要的The tradition of religious sculpture extends over most historical periods but is less clearly delineated than that of stonewares or porcelains, for it embraces the old custom of earthenware burial ceramics with later religious images and architectural ornament.

红色部分是主干

宗教神像的传统虽然在大多数历史时期延续，但却不如瓷器描述的多，主要是因为它继承了有宗教图案的土质陪葬瓷器以及建筑装饰品的古老传统。