cellular layer

例句：

1. 1.The cell membrane is the outermost layer of a cell that protects it from the outside environment.
   细胞膜是细胞的最外层，保护细胞免受外部环境的影响。
2. 2.Cellular membranes are responsible for transporting nutrients and waste products across the cell.
   细胞膜负责在细胞内运输营养物质和废物。
3. 3.The study of cellular membranes has led to many breakthroughs in medicine and technology.
   对细胞膜的研究已经为医学和科技领域带来了许多突破。