membranes

例句:

• Simultaneously or consequently genomes evolved protective-functional membranes, their organs.
  来自SA
• The waste material is placed in cells with permeable membranes.
  废液置于有渗透膜的槽中.
  
• The sarcoplasmic reticulum is a system of intracellular membranes.
  肌浆网属于细胞内膜系统.
  
• It is also encased in membranes of connective tissue called the meninges.
  它还被一些结缔组织的膜所包裹,这些膜叫做脑膜.
  
• Surely, our trillions of cell membranes deserve better than that!
  来自SA
• Membranes are still expensive and relatively inefficient.
  来自WSJ