frenulum of upper lip [解剖] 上唇系带

frenulum of lower lip [解剖] 下唇系带

frenulum of superior lip 上唇系带

upper lip frenulum 上唇系带

frenulum of inferior lip 下唇系带

frenulum of lip 唇系带

frenulum lower lip 释义下唇系带

frenulum superior lip 上唇系带

frenulum inferior lip 下唇系带