A flat polished surface on a cut gemstone or object

宝石或物体上经切磨的平整抛光表面

A distinct aspect, side, or component of something

事物的一个独特方面、侧面或组成部分

One of the small lens-like units in a compound eye

复眼中一个小型透镜状单位

Any of the paired small joints between vertebrae that guide motion

椎骨之间成对的小关节，起引导运动之用

A face of a polytope of codimension one

多胞体中余维为一的面

A category or criterion used to filter and sort results

用于筛选和排序结果的类别或条件

To cut flat polished surfaces on a gemstone

在宝石上切磨出平整抛光的面