| 释义 |
〔frenum〕A membranous fold of skin or mucous membrane that supports or restricts the movement of a part or organ, such as the small band of tissue that connects the underside of the tongue to the floor of the mouth.系褶：皮肤的一种膜状褶或粘膜用来支持或限制某部位或器官的运动，例如连接舌下部和口腔底部的一小段组织 |