Parasympathetic System relaxes the body.
副交感神经系统使身体放松。
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。
Normally our autonomic nervous system is in a constant balance of sympathetic and parasympathetic.
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.
通常我们的自主神经系统是在不断的平衡和副交感神经。
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