presynaptic membrane

例句：

1. 1.The researchers found that the presynaptic membrane plays a crucial role in the transmission of signals.
   研究人员发现，突触前膜在信号传递中起着至关重要的作用。
2. 2.The presynaptic membrane is responsible for the release of neurotransmitters at the synapse.
   突触前膜负责在突触处释放神经递质。
3. 3. The presynaptic membrane is also known as the synaptic vesicle.
   突触前膜也被称为囊泡。