outer membrane

• 外部膜

outer membrane的用法和样例：

例句

1. As the wrigglers develop, the gelatinous outer membrane decomposes, perhaps triggered by a chemical change in the tadpoles.
   随着这些小虫的生长，胶状的外部膜会分解，这可能是由于蝌蚪内部的化学作用而触发的。