大部分细胞器清晰可见，神经纤维较丰富、排列有序，突触膜清晰，突触间隙不清，突触小泡较多。

What's more, most of the organelles were visible, nerve fibers were abundant and arranged in order, synaptic membrane was clear, synaptic cleft was unclear, synaptic vesicles were enough.

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同时突触超微结构也出现一定的改变，如：突触小泡减少和突触间隙变窄。

The ultrastructural alterations could also be found in synapse, for example, decreased synaptic vesicle, narrow synaptic cleft.

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When these vesicles dump their contents into the synaptic cleft, the concentration of these ligands rise.

当这些小泡将其内含物释放入突触间隙,这些配体的浓度即增加

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When an action potential comes down this pre-synaptic axon, when it reaches this point here, it sets off the process of these vesicles dumping their content into the synaptic cleft.

当动作电位到达轴突的突触前膜时,当到达这一点时 小泡就将其内含物,排放到突触间隙中去

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