benzene ring
benzene-ring的词性：
n.（名词）
1. The hexagonal ring structure in the benzene molecule, C6H 6, and its substitutional derivatives, each vertex of which is occupied and distinguished by a carbon atom.
苯环：苯分子中的六角环形结构及其置换派生物，C6H 6，每个顶点被一个碳原子占据或通过一个碳原子加以区别