cell envelope

• 细胞膜

cell envelope的用法和样例：

例句

1. Complement enzymes attack antigens by puncturing the cell membrane.
   补体酶通过刺穿细胞膜来攻击抗原。
2. The cell wall surrounds the cell, but its chalzal ends and the lateral wall with synergid is discontinuous.
   细胞外被细胞壁，其合点端及侧方与助细胞共同壁不连续。