46．Implicit in it is an aesthetic principle as well：that the medium has certainqualities of beauty and expressiveness with which sculptors must bring theirown aesthetic sensibilities into harmony．

(倒装结构Implicit in it is an aesthetic principle as well=An aestheticprinciple is implicit in it as well，that引导的句子做principle的同位语)

其中也蕴涵一个美学原则：用于雕刻的媒介物有一定的美和富于表现力的特性，雕刻家必须使他们自己的审美感与这些特性融为和谐的—体。

分句1：Implicit in it is…

分句2：that the medium has…

分句3：which sculptors must bring…

3和2嵌套

1和2嵌套