labial lamina

例句：

1. 1.The labial lamina is a thin layer of tissue that lines the mouth.
   唇缘膜是一层薄的组织，位于嘴唇上。
2. 2. The labial lamina plays a crucial role in the function of the mouth.
   唇缘膜在口腔功能中起着至关重要的作用。
3. 3. During the development of the embryo, the labial lamina is formed by the folding of the epithelium.
   胚胎发育过程中，唇缘膜是由上皮层折叠形成的。