From a practical aspect this protected the figures against breakage and psychologically gives the images a sense of strength and power, usually enhanced by a supporting back pillar.
1. “, usually enhanced by a supporting back pillar.”这部分是该理解成逗号隔开的后置定语,还是省略了which is 的非限制性定从?还是理解成状语?
2. 逗号隔开的后置定语和 省略了which is 的非限制性定从的分辨依据是什么?两者有什么用法和含义的区别吗?