副交感神经系统使身体放松。
通常我们的自主神经系统是在不断的平衡和副交感神经。
Normally our autonomic nervous system is in a constant balance of sympathetic and parasympathetic.
采取的活动，通过副交感神经系统的地方是自发发生的事情。
The activities that take place through the parasympathetic system are spontaneous happenings.
采取的活动，通过副交感神经系统的地方是自发发生的事情。
The activities that take place through the parasympathetic system are spontaneous happenings.
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