septulum

例句：

1. 1. The septum was broken, and the air leaked out.
   隔膜破裂，空气泄漏出来。
2. 2. The septum is a thin membrane that separates the brain from the spinal cord.
   隔膜是一层薄膜，将大脑与脊髓分隔开。
3. 3. The septum is responsible for regulating the flow of blood through the heart.
   隔膜负责调节通过心脏的血液流动。